> ## Content Index > Fetch the complete content index at: https://mightymeep.com/llms.txt > Use this file to discover other available public pages before exploring further. # Best Peptide Hair Serum for a Thinning Hairline - URL: https://mightymeep.com/best-silicone-free-peptide-hair-growth/ - Published: 2026-09-07T07:33:03.000Z - Updated: 2026-09-07T09:49:21.000Z - Description: Peptide count is the number every listing shouts about. Bottle size and application style are what you'll actually notice after a month. Here's how seven silicone-free scalp serums compare, and which one earns the default spot. - Author: Jody Parker - Tags: Hair Loss Products, Hair Care, Scalp Care The best silicone free peptide hair growth serum is The Ordinary Multi-Peptide Serum for Hair Density, a 2.02 Fl Oz dropper bottle that stacks six named peptide technologies and states silicone-free on the label. If you want copper peptides specifically, Sahha's 7200MG GHK-Cu serum covers a bigger area from its own 2 Fl Oz bottle. Most shoppers compare peptide counts. That's the wrong number. In this guide 1. [Best silicone free peptide hair growth serum at a glance](#best-silicone-free-peptide-hair-growth-serum-at-a-glance) 2. [How I screened these seven listings](#how-i-screened-these-seven-listings) 3. [Peptides or copper peptides: which formula do you need?](#peptides-or-copper-peptides-which-formula-do-you-need) 4. [1\. The Ordinary Multi-Peptide Serum for Hair Density — Best overall](#1-the-ordinary-multi-peptide-serum-for-hair-density-%E2%80%94-best-overall) 5. [2\. Sahha GHK-Cu Peptide Hair Growth Serum — Best for heavy use](#2-sahha-ghk-cu-peptide-hair-growth-serum-%E2%80%94-best-for-heavy-use) 6. [3\. INFINA ESSENTIALS Multi Peptide Hair Serum for Hair Growth — Best upgrade](#3-infina-essentials-multi-peptide-hair-serum-for-hair-growth-%E2%80%94-best-upgrade) 7. [4\. XILRVON Copper Peptides for Hair Growth with 4% Copper — Most versatile](#4-xilrvon-copper-peptides-for-hair-growth-with-4-copper-%E2%80%94-most-versatile) 8. [5\. Fléur Bloom Clinically Proven Copper GHK-CU Peptide Hair Serum — Best premium](#5-fl%C3%A9ur-bloom-clinically-proven-copper-ghk-cu-peptide-hair-serum-%E2%80%94-best-premium) 9. [6\. Rainbow Nutrients Hair Magic Hair Growth Serum Roll On — Best for families](#6-rainbow-nutrients-hair-magic-hair-growth-serum-roll-on-%E2%80%94-best-for-families) 10. [7\. TYPEBEA G1 Travel Size Overnight Boosting Peptide Hair Growth Serum — Best budget pick](#7-typebea-g1-travel-size-overnight-boosting-peptide-hair-growth-serum-%E2%80%94-best-budget-pick) 11. [How long does one bottle actually last?](#how-long-does-one-bottle-actually-last) 12. [Dropper, spray or roll-on: does the applicator matter?](#dropper-spray-or-roll-on-does-the-applicator-matter) 13. [What these listings don't tell you](#what-these-listings-dont-tell-you) 14. [The verdict](#the-verdict) 15. [FAQ](#faq) ## Best silicone free peptide hair growth serum at a glance | Pick | Key peptide claim | Bottle size | Price | | --------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------ | ----------- | --------------------------------------------------------------------- | | **Best overall**[The Ordinary Multi-Peptide Serum for Hair Density](https://www.amazon.com/dp/B09WMT8HYB?tag=mightymeep-20) | Six named complexes(REDENSYL, Procapil, CAPIXYL claim) | 2.02 Fl Oz | [Check Price](https://www.amazon.com/dp/B09WMT8HYB?tag=mightymeep-20) | | **Best for heavy use**[Sahha GHK-Cu Peptide Hair Growth Serum](https://www.amazon.com/dp/B0H4QY1FGH?tag=mightymeep-20) | 7200MG GHK-Cu claimliposomal delivery | 2 Fl Oz | [Check Price](https://www.amazon.com/dp/B0H4QY1FGH?tag=mightymeep-20) | | **Best upgrade**[INFINA ESSENTIALS Multi Peptide Hair Serum](https://www.amazon.com/dp/B0CMQ9X16Z?tag=mightymeep-20) | Five peptides plus GHK-Cu claim | 2 Fl Oz | [Check Price](https://www.amazon.com/dp/B0CMQ9X16Z?tag=mightymeep-20) | | **Most versatile**[XILRVON Copper Peptides for Hair Growth](https://www.amazon.com/dp/B0H7RP1P8T?tag=mightymeep-20) | 4% GHK-Cu claimspray format | 2.03 Fl Oz | [Check Price](https://www.amazon.com/dp/B0H7RP1P8T?tag=mightymeep-20) | | **Best premium**[Fléur Bloom Copper GHK-CU Peptide Hair Serum](https://www.amazon.com/dp/B0DQG7RXG3?tag=mightymeep-20) | GHK-Cu plus five peptides claim | 1 Fl Oz | [Check Price](https://www.amazon.com/dp/B0DQG7RXG3?tag=mightymeep-20) | | **Best for families**[Rainbow Nutrients Hair Magic Serum Roll On](https://www.amazon.com/dp/B0G4J6GG8W?tag=mightymeep-20) | Multi-peptide plus saw palmetto claim | 0.68 Fl Oz | [Check Price](https://www.amazon.com/dp/B0G4J6GG8W?tag=mightymeep-20) | | **Best budget pick**[TYPEBEA G1 Travel Size Peptide Hair Serum](https://www.amazon.com/dp/B0GZMK7HSY?tag=mightymeep-20) | Baicapil 3% claim | 10 g bottle | [Check Price](https://www.amazon.com/dp/B0GZMK7HSY?tag=mightymeep-20) | ## How I screened these seven listings I started from the published data on each listing and lined the numbers up in a single column: bottle size, weight, dimensions, stated peptide percentages, and every "free from" claim printed in the feature bullets. That last one matters here, because the search phrase asks for a silicone free peptide hair growth serum and Amazon's search does not actually filter on formulation. What survived the screen: - **A stated silicone-free claim in the listing text.** Six of the seven state it outright. Fléur's listing names paraben-free and fragrance-free, not silicone-free, so I've flagged that below rather than pretending otherwise. - **A published bottle size.** All seven give one, though TYPEBEA's is stated as a 10 g weight and a 10ml bottle in the features while the size field reads 1 Fl Oz. That discrepancy is the listing's, not mine. - **A leave-in, no-rinse format.** Every pick here is applied and left on the scalp. None is a wash-out treatment. What got cut on the way: anything without a peptide named in the listing, anything sold as a shampoo or conditioner, and any bottle whose listing gave no size at all. Two things I could not screen for. There's no independent verification of any percentage on any of these labels, and there's no way to confirm a formulation from a bullet point. Every ingredient claim below is the manufacturer's, and I've written it that way. ## Peptides or copper peptides: which formula do you need? This is the real fork in the road, and it's not the one most guides take. Four of these seven serums lead with GHK-Cu, the copper tripeptide: Sahha, Fléur, XILRVON and INFINA ESSENTIALS. The Ordinary leads with a stack of branded complexes instead, naming REDENSYL, Procapil, CAPIXYL, BAICAPIL, AnaGain and high-solubility caffeine. TYPEBEA names one ingredient at one percentage, Baicapil at 3%. Rainbow Nutrients pairs multi-peptides with rosemary oil and saw palmetto. The number the listings want you to compare is the peptide count. Six beats five beats one. That comparison collapses the moment you look closely, because nobody publishes the concentration of most of those peptides. Sahha's 7200MG figure and XILRVON's 4% figure are the only two concentration claims in the copper group, and they're measured differently, so you can't put them side by side either. A more useful way to sort them: 1. **Broad, diffuse thinning across the whole scalp.** The Ordinary or INFINA ESSENTIALS. Wide ingredient coverage, 2 Fl Oz to work with. 2. **A specific receding hairline or crown patch.** Sahha or Fléur, both aimed at hairline, crown and part line in their own copy. 3. **Beard or brows as well as scalp.** Rainbow Nutrients, the only roll-on here. The category quietly assumes daily use for months. Three of these listings say "daily", two say "nightly", and one specifies 1ml per night. That is the figure that decides your real cost, not the peptide count. ## 1\. The Ordinary Multi-Peptide Serum for Hair Density — Best overall **The widest published ingredient stack of the seven, in a 2.02 Fl Oz bottle that explicitly states silicone-free.** [![Clear dropper bottle of The Ordinary multi-peptide hair density serum — the 2.02 Fl Oz size and clear formula show a water-light leave-in, not an oil](https://m.media-amazon.com/images/I/31UiV4WvLkL._SL500_.jpg)](https://www.amazon.com/dp/B09WMT8HYB?tag=mightymeep-20) **Best for:** diffuse thinning across the whole scalp, nightly use **Skip it if:** you want a copper peptide percentage on the label Six named peptide technologies is the most of any listing here. The Ordinary states REDENSYL, Procapil, CAPIXYL, BAICAPIL, AnaGain and high-solubility caffeine, plus plant extracts including Larix Europaea wood, Pisum Sativum and Camellia Sinensis leaf. That breadth is the case for this pick, and it's the reason I'd start here for thinning that isn't confined to one patch. The practical details back it up. At 2.02 Fl Oz it's tied with XILRVON for the largest bottle in the set, and it's the only pick publishing full dimensions at 5.14 x 1.53 x 1.53 in, which tells you it stands upright in a cabinet rather than rolling around a drawer. Weight is listed at 3.17 oz. The "free from" bullet is the most complete of the seven: cruelty-free, gluten-free, vegan, alcohol-free and silicone-free, all stated together. Directions are a few drops to a clean, dry scalp once daily, ideally at bedtime. It sells faster than every other pick in this set by a wide margin, and it sits in the priciest tier. The trade-off against the copper group is real: The Ordinary publishes no concentration figure for any single peptide, so you're buying breadth on trust rather than a number you can compare. **Pros:** - Six named peptide complexes, the most in this set - 2.02 Fl Oz, tied for the largest bottle here - Only pick publishing full bottle dimensions - Silicone-free, alcohol-free and vegan all stated - The one buyers choose most often in this group **Cons:** - No concentration percentage published for any peptide - Sits in the most expensive tier of the seven - Dropper is slower than a spray on a large crown area - Only two sellers list it [Check Price on Amazon](https://www.amazon.com/dp/B09WMT8HYB?tag=mightymeep-20) ## 2\. Sahha GHK-Cu Peptide Hair Growth Serum — Best for heavy use **A 2 Fl Oz copper peptide serum with the highest stated concentration figure in the set, at 7200MG.** [![Blue bottle of Sahha GHK-Cu copper peptide scalp serum — the 7200MG figure on the label is the highest concentration claim among these picks](https://m.media-amazon.com/images/I/41aIB8T3+eL._SL500_.jpg)](https://www.amazon.com/dp/B0H4QY1FGH?tag=mightymeep-20) **Best for:** treating hairline, crown and part line at once **Skip it if:** you only need a small patch covered If you're applying serum to three areas every night, bottle size and stated strength decide everything. Sahha publishes both: a 2 Fl Oz bottle, described in the features as 60ml, carrying a 7200MG liposomal GHK-Cu complex. That 7200MG figure is the largest number any of these seven prints on a label. The formula claim goes beyond copper. Sahha names caffeine, biotin, panthenol and niacinamide alongside the GHK-Cu, and describes a liposomal delivery system that encapsulates ingredients in phospholipid layers. The listing directs it at hairline, crown and part line specifically, which is a narrower and more honest target than "all-over density". It's a leave-in applied to clean, dry scalp, described as fast-absorbing and non-greasy. Two things to weigh. It's the second-priciest pick here, and 7200MG is a total milligram figure rather than a percentage, so you cannot line it up against XILRVON's 4% claim and declare a winner. Against The Ordinary it trades ingredient breadth for one heavily-marketed molecule. If your thinning is localised and you'd rather spend on a single mechanism, that's a fair trade. **Pros:** - Highest stated concentration figure in this set, 7200MG - 2 Fl Oz bottle suits treating multiple areas nightly - Caffeine, biotin, panthenol and niacinamide all named - Liposomal delivery described in the listing **Cons:** - Second-most expensive pick of the seven - Milligram figure can't be compared to a percentage claim - No bottle dimensions or applicator type published - Only two sellers list it [Check Price on Amazon](https://www.amazon.com/dp/B0H4QY1FGH?tag=mightymeep-20) ## 3\. INFINA ESSENTIALS Multi Peptide Hair Serum for Hair Growth — Best upgrade **Five individually named peptides including GHK-Cu, in a 2 Fl Oz bottle priced in the entry tier.** [![Bottle of INFINA ESSENTIALS multi peptide hair serum — the label names five separate peptides, the most itemised list among the cheaper picks](https://m.media-amazon.com/images/I/41ElKh3NHdL._SL500_.jpg)](https://www.amazon.com/dp/B0CMQ9X16Z?tag=mightymeep-20) **Best for:** wanting five named peptides plus GHK-Cu without the premium tier **Skip it if:** you need published bottle dimensions before buying This is the pick that muddles the neat price-to-ingredient story. INFINA ESSENTIALS names its peptides one by one: Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-3, Copper Tripeptide-1 (GHK-Cu), Myristoyl Hexapeptide-16 and a fifth in the same complex. That's the most itemised peptide list in the group, and it sits in the cheapest tier of the seven alongside TYPEBEA and XILRVON. Beyond the peptides, the listing names caffeine, rosemary leaf extract, apigenin, oleanolic acid, zinc chloride and glycerin. The "free from" claim covers silicones, sulfates and parabens together. It's a 2 Fl Oz water-based leave-in, 2 oz by weight, applied as a few drops to clean dry scalp at bedtime and massaged in. No rinse. What you give up is polish and disclosure. No dimensions, no colour, no applicator described, and the listing leans on customer wording in one bullet where a figure would have been more useful. Against The Ordinary, it's a narrower ingredient stack in a bottle you know less about. Against Sahha, it's a wider stack at a lower price with no concentration figure at all. **Pros:** - Five peptides named individually, including GHK-Cu - 2 Fl Oz in the cheapest price tier here - Silicone-free, sulfate-free and paraben-free stated - Water-based, no-rinse formula for daily use **Cons:** - No dimensions, colour or applicator published - No concentration percentage for any peptide - Sells slower than The Ordinary, Fléur and Rainbow Nutrients - Sparsest specification list of the 2 Fl Oz picks [Check Price on Amazon](https://www.amazon.com/dp/B0CMQ9X16Z?tag=mightymeep-20) ## 4\. XILRVON Copper Peptides for Hair Growth with 4% Copper — Most versatile **The only pick that publishes a copper peptide percentage, and the only spray applicator here.** [![Blue bottle of XILRVON copper peptide hair serum — the 4% GHK-Cu figure is the only percentage-based concentration claim in this comparison](https://m.media-amazon.com/images/I/417IiQT4SxL._SL500_.jpg)](https://www.amazon.com/dp/B0H7RP1P8T?tag=mightymeep-20) **Best for:** spraying a wide crown area quickly **Skip it if:** you want pinpoint control at the temples Two things set XILRVON apart in this set. It states 4% GHK-Cu copper peptides, the only percentage-based concentration figure of the seven, and it applies as a spray rather than a dropper or roller. A spray covers a crown or a widening part in seconds, which is the difference between a routine you keep for six months and one you abandon in three weeks. At 2.03 Fl Oz it's the largest bottle here by a hair. The botanical list is specific: Centella Asiatica, Baical Skullcap, Sophora Flavescens and licorice root. XILRVON states vegan, cruelty-free, alcohol-free, silicone-free and gluten-free, which is the second-most complete "free from" claim after The Ordinary. The water-based formula is described as spraying on cleanly with no sticky buildup, and it sits in the cheapest price tier. The catches are two. Only one seller lists it, the thinnest availability in this set, and a spray gives you far less precision than Sahha's or Fléur's dropper if you're targeting temples or a single part line. Against The Ordinary you trade six named complexes for one measurable percentage and a faster application. **Pros:** - Only percentage-based copper peptide claim here, 4% - Largest bottle in the set at 2.03 Fl Oz - Spray applicator covers wide areas fast - Cheapest tier, with a full silicone-free claim **Cons:** - Only one seller lists it - Spray is imprecise on temples and hairline - No weight or dimensions published - Botanical list is detailed but carries no percentages [Check Price on Amazon](https://www.amazon.com/dp/B0H7RP1P8T?tag=mightymeep-20) ## 5\. Fléur Bloom Clinically Proven Copper GHK-CU Peptide Hair Serum — Best premium **A fragrance-free, water-based 1 Fl Oz copper peptide serum with a precision dropper, at the top of the price range.** [![Amber bottle of Fléur Bloom copper peptide hair serum — the amber glass and 3.85 in height mark it as a small precision-dropper bottle](https://m.media-amazon.com/images/I/51+iGl+ejmL._SL500_.jpg)](https://www.amazon.com/dp/B0DQG7RXG3?tag=mightymeep-20) **Best for:** fragrance-free, water-based serum for a sensitive scalp **Skip it if:** you compare cost per ounce before anything else Fléur is the most expensive pick here and the smallest of the dropper serums at 1 Fl Oz. What it offers instead of volume is a formula aimed squarely at reactive scalps: paraben-free and fragrance-free are both stated, and the listing describes a lightweight, water-based, residue-free serum for sensitive scalps. Fragrance is the most common irritant in leave-on scalp products, and it's the one claim only this pick makes explicitly. The peptide story is GHK-Cu plus five advanced peptides, with no concentration figure attached. Dimensions are published at 3.85 x 1.24 x 1.73 in, an amber bottle small enough for a travel bag, and application is via a precision dropper for daily use on roots and scalp. Now the honest part. Fléur's listing states paraben-free and fragrance-free, but it does not state silicone-free anywhere, unlike the other six. If a silicone free peptide hair growth serum is a hard requirement, you'd need to read the full ingredient list on the bottle before committing. Combine that with the highest price and the second-smallest volume, and this is a pick for a specific reason, not a default. **Pros:** - Only pick stating fragrance-free, useful for sensitive scalps - Published dimensions, 3.85 x 1.24 x 1.73 in - Precision dropper for hairline and part-line work - Water-based and residue-free per the listing **Cons:** - Listing does not state silicone-free - Most expensive pick here at 1 Fl Oz - No peptide concentration figure published - No weight listed, only two sellers [Check Price on Amazon](https://www.amazon.com/dp/B0DQG7RXG3?tag=mightymeep-20) ## 6\. Rainbow Nutrients Hair Magic Hair Growth Serum Roll On — Best for families **A 0.68 Fl Oz roll-on that targets beard and brows as well as scalp, with the most complete free-from list after The Ordinary.** [![Rainbow Nutrients Hair Magic roll-on serum bottle — the roller ball head is what makes beard and brow application practical](https://m.media-amazon.com/images/I/51q8kGAJIZL._SL500_.jpg)](https://www.amazon.com/dp/B0G4J6GG8W?tag=mightymeep-20) **Best for:** scalp, beard and brows from one roll-on **Skip it if:** you're treating a full crown The roller ball is the whole point. Every other pick here is a dropper or a spray, and neither handles a brow line or a patchy beard without mess. Rainbow Nutrients is the only roll-on of the seven, and the listing sells it exactly that way: precise, no-drip application to scalp, hairline, beard and eyebrows. The formula pairs multi-peptides with rosemary oil and saw palmetto, a combination no other pick in this set names. Its free-from list is the second longest here: paraben-free, silicone-free, sulfate-free, phthalate-free, alcohol-free and cruelty-free, plus lab tested and made in the USA. It sits mid-range on price and sells at a rate close to Sahha and Fléur. The number that limits it is 0.68 Fl Oz. That's the smallest volume of any pick except TYPEBEA's travel bottle, roughly a third of The Ordinary's. A roller also delivers less product per pass than a dropper, so covering an entire crown with one is slow work. Treat it as a targeting tool for edges and small areas, not an all-over serum. **Pros:** - Only roll-on applicator in this set - Suits beard and brows as well as scalp - Six separate free-from claims including silicone-free - Rosemary oil and saw palmetto, unique here **Cons:** - Smallest full-size bottle at 0.68 Fl Oz - Roller is slow across a whole crown - No weight, dimensions or peptide percentages published - Mid-range price for the least volume among non-travel picks [Check Price on Amazon](https://www.amazon.com/dp/B0G4J6GG8W?tag=mightymeep-20) ## 7\. TYPEBEA G1 Travel Size Overnight Boosting Peptide Hair Growth Serum — Best budget pick **The cheapest way into this category, with the only stated dose per application, but it's a 10 g travel bottle.** [![Beige TYPEBEA G1 travel size peptide hair serum bottle — the 10ml flight-ready format shows this is a trial size, not a full course](https://m.media-amazon.com/images/I/31PpkDWMvfL._SL500_.jpg)](https://www.amazon.com/dp/B0GZMK7HSY?tag=mightymeep-20) **Best for:** trying a peptide serum for a few weeks before committing **Skip it if:** you want more than a couple of weeks from one bottle TYPEBEA is the cheapest of the seven, and it's the only listing that tells you how much to use per night: 1ml applied to areas of concern. That single number is more useful than any peptide count, because it lets you work out how long a bottle lasts. On a 10ml bottle, that's roughly ten nights. The formula claim centres on one ingredient at one strength, Baicapil at 3%. TYPEBEA states the formula preserves scalp pH between 5.0 and 5.5 and describes it as fast-absorbing and non-sticky, working overnight without adding oil or frizz. It's paraben-free, silicone-free and sulfate-free per the listing, and stated safe for curly, straight, coloured, damaged and dry hair as well as human hair extensions. The 10ml bottle is flight-ready. The limits are obvious once you see the size. It's the smallest volume here by a wide margin, its own listing puts the timeline for visible change at 12 weeks, and one bottle cannot cover that. It's also the slowest seller of the seven by a large gap. Buy it to test tolerance and texture on your scalp, then move up. **Pros:** - Cheapest pick in this set - Only listing stating a dose, 1ml nightly - Names Baicapil at 3%, a specific strength - Flight-ready 10ml bottle, silicone-free stated **Cons:** - Smallest volume here, roughly ten nightly doses - Bottle can't cover the 12-week timeline its own listing cites - Size field reads 1 Fl Oz while features say 10ml - Slowest seller of the seven by a wide margin [Check Price on Amazon](https://www.amazon.com/dp/B0GZMK7HSY?tag=mightymeep-20) ## How long does one bottle actually last? Here's the trick with this category. Nobody sells a course, they sell a bottle, and the bottles vary by a factor of six. TYPEBEA is the only listing that publishes a dose, 1ml per night. Apply that same 1ml from every bottle here and the arithmetic falls out fast: - **2.03 Fl Oz (XILRVON):** roughly 60 nights - **2.02 Fl Oz (The Ordinary):** roughly 60 nights - **2 Fl Oz (Sahha, INFINA ESSENTIALS):** roughly 59 nights - **1 Fl Oz (Fléur):** roughly 30 nights - **0.68 Fl Oz (Rainbow Nutrients):** roughly 20 nights - **10 g / 10ml (TYPEBEA):** roughly 10 nights Two caveats. A dropper on a small hairline patch uses less than 1ml, and a spray across a whole crown uses more, so treat those as ceilings rather than promises. And TYPEBEA's own copy cites a 12-week window for visible change, which is about 84 nights. Line those two facts up and the picture changes. Only the four 2 Fl Oz bottles get you close to a single 12-week run, and even they fall short of it. Fléur needs three bottles for that window, Rainbow Nutrients needs four, TYPEBEA needs eight. That is the calculation that actually decides which silicone free peptide hair growth serum is cheap, and it has nothing to do with the number on the price tag. ## Dropper, spray or roll-on: does the applicator matter? More than the ingredient list, in my view, because an applicator you find annoying is an applicator you stop using. Three formats appear across these seven. Droppers on The Ordinary, Fléur, Sahha and INFINA ESSENTIALS. A spray on XILRVON. A roller ball on Rainbow Nutrients. Each suits a different pattern of thinning. - **A dropper** places product exactly where you point it. Best for a receding temple, a single part line, a defined crown patch. Slowest across a wide area. - **A spray** covers a broad crown in a few passes. Fastest by a distance, worst for precision, and it will land on hair as well as scalp. - **A roller** is the only one of the three that works on a brow or a beard without dripping into your eyes. Match the format to your pattern, not to the price. Diffuse thinning across the whole scalp favours the spray or a dropper on a 2 Fl Oz bottle. A sharply receding hairline favours a dropper. Beard and brow work leaves you one option in this set. One more practical note. Every pick here is a leave-in applied to clean, dry scalp, and four of the seven specify bedtime. That means the serum sits on your pillowcase for eight hours. All seven are described as water-based, fast-absorbing or non-greasy, so none should soak through, but a lightweight water-based formula behaves very differently from an oil here and that difference is worth having. ## What these listings don't tell you Plenty. Being straight about the gaps is more useful than filling them with guesses. **No independent verification of any percentage.** 7200MG, 4%, 3% Baicapil, "five peptides" — every one of those figures comes from the brand that sells the bottle. I can compare what's printed. I cannot confirm any of it. **"Clinically proven" isn't a standard.** Two listings use the phrase. Neither publishes the study, the sample size or the endpoint alongside it. TYPEBEA's "reduces hair loss by 60% in just 12 weeks" is the boldest claim in the set and the one I'd want a citation for most. **Concentrations aren't comparable across labels.** A milligram total and a percentage measure different things. Sahha's 7200MG and XILRVON's 4% cannot be ranked against each other from the outside. **Ingredient lists are partial.** Feature bullets name highlights, not the full INCI list. This matters most for a silicone free peptide hair growth serum, because "silicone-free" appearing in a bullet is a marketing statement, and the ingredient panel on the bottle is the actual document. Fléur, notably, never states it. **Nothing here is a medical treatment.** These are cosmetic scalp serums. Real hair loss has causes a serum doesn't address, and if yours is sudden, patchy or accompanied by scalp symptoms, that's a conversation with a doctor rather than a shopping decision. ## The verdict If you're treating diffuse thinning across your whole scalp, buy The Ordinary Multi-Peptide Serum for Hair Density. Six named peptide complexes, 2.02 Fl Oz, a full silicone-free claim, and published dimensions so you know what you're getting. It's also the one buyers here choose most often by a very large margin, which counts for something when nobody publishes verified concentrations. If you're treating a specific hairline, crown or part line, buy Sahha's GHK-Cu serum instead. Its 7200MG copper peptide figure is the highest stated concentration in this set, its own copy targets those three areas by name, and the 2 Fl Oz bottle supports nightly use across all of them. The cutoff is coverage area. Whole scalp goes to The Ordinary's breadth. Defined patch goes to Sahha's concentration. And below both of those, INFINA ESSENTIALS is the value play: five itemised peptides including GHK-Cu, 2 Fl Oz, entry-tier pricing. It publishes less about the bottle than either leader, but it names more of what's inside it than almost anything here. The pick I'd steer most people away from as a first purchase is TYPEBEA, not because the formula looks weak but because 10ml cannot carry the 12-week timeline its own listing describes. ## FAQ ### Is a silicone free peptide hair growth serum worth the money? A silicone free peptide hair growth serum is worth it if you'll use it nightly for months, because every listing here frames results in weeks, not days. TYPEBEA cites 12 weeks. Buy a 2 Fl Oz bottle rather than a travel size, since anything smaller runs out long before that window closes and repeat purchases erase the saving. ### How much does the cheapest option actually save you? The cheapest option here, TYPEBEA at 10ml, saves less than it appears to. At the 1ml nightly dose its own listing specifies, that bottle lasts roughly ten nights against roughly 60 from The Ordinary or XILRVON. Compare volume before price. A cheap small bottle bought six times over is not a cheap purchase. ### Does GHK-Cu mean the serum is silicone-free? GHK-Cu does not mean silicone-free. They're unrelated: GHK-Cu is a copper tripeptide, silicones are conditioning agents. Four picks here use GHK-Cu, and three of them state silicone-free while Fléur's listing does not. Check the free-from bullets and the ingredient panel separately from the peptide claim, every time. ### The Ordinary or Sahha: which should I choose? Choose between The Ordinary and Sahha by coverage area. The Ordinary names six peptide complexes across 2.02 Fl Oz, better for thinning spread over the whole scalp. Sahha states 7200MG GHK-Cu in 2 Fl Oz and aims at hairline, crown and part line specifically. Breadth versus a single high-concentration molecule. ### What mistake do first-time buyers make with peptide serums? First-time buyers make the mistake of ranking serums by peptide count. Six named peptides looks better than one, but most listings publish no concentration for any of them, so the count tells you nothing about strength. Bottle size, stated dose and applicator style are checkable. Peptide count, on its own, isn't. Start with the 2 Fl Oz bottles. The Ordinary if your thinning is spread out, Sahha if it's concentrated at the hairline or crown, INFINA ESSENTIALS if you want five named peptides for less. Then note the date you open it, because the only way to know whether a serum is doing anything is to run it for the full window the label describes without switching halfway through. The Ordinary earns the default spot for one unglamorous reason: it publishes more about what's in the bottle and what the bottle is than anything else here. *Last updated: October 5, 2026\. Product availability re-checked.* *This page contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.*