Ingredient review
Biotinoyl Hexapeptide-2 Amide
INCI: Biotinoyl Hexapeptide-2 Amide
A synthetic peptide that may help reduce hair thinning and improve skin firmness by supporting collagen and keratin production.
In plain English
This ingredient is a lab-made peptide (a small protein fragment) attached to biotin (a B vitamin). In skincare and haircare products, it's used to signal skin and hair follicle cells to produce more collagen and keratin, which can lead to stronger hair and firmer skin. Think of it as a tiny messenger that tells your cells to work harder at keeping you looking healthy.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Biotinoyl Hexapeptide-2 Amide is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Biotinoyl Hexapeptide-2 Amide.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
Biotinoyl Hexapeptide-2 Amide is a synthetic peptide composed of a short chain of amino acids (hexapeptide) bonded to biotin. It is designed to be stable and penetrate the skin or scalp, where it can interact with cellular receptors.
How it works
Once applied, the peptide portion binds to receptors on skin and hair follicle cells, triggering a cascade that boosts the production of collagen, elastin, and keratin. The biotin component may enhance the peptide's stability and delivery. Over time, this can lead to thicker hair strands and improved skin elasticity.
Pros
Targeted hair support
Specifically designed to signal hair follicle cells, potentially reducing shedding and increasing hair density over weeks of consistent use.
Low irritation profile
Most users tolerate it well, even on sensitive scalps, making it a gentler alternative to some hair growth ingredients like minoxidil.
Cons and cautions
Results take time
Visible improvements in hair thickness or skin firmness typically require 3-6 months of daily use, and results may be subtle.
Limited independent research
Most studies are funded by manufacturers, and there are few large-scale, peer-reviewed human trials comparing it to other treatments.
Best for
- People experiencing mild to moderate hair thinning
- Those looking for a gentle anti-aging peptide for skin
Use caution if
- Individuals with known allergies to biotin or peptide-based ingredients
- Those with severely irritated or broken skin on the application area
Usage tips
Safety summary
Considered safe for cosmetic use at typical concentrations. Mild irritation is rare but possible in sensitive individuals. No serious adverse effects have been reported in available studies.
Research notes
Small-scale human studies and in vitro research suggest it can increase hair diameter and reduce shedding. However, larger independent clinical trials are needed to confirm efficacy and compare it with established treatments.
Common label clues
- Typical concentration
- 0.001% to 0.1%
- Regulatory status
- Approved as a cosmetic ingredient in the EU, US, and other major markets. Not classified as a drug, so it cannot claim to treat medical conditions like alopecia.
- Common uses
- Hair serums, Scalp treatments, Anti-aging creams
- Environmental note
- Synthetically produced in laboratories, so it does not rely on animal or plant harvesting. Its environmental impact is minimal compared to natural extracts.
Good to know
- Often found in combination with other peptides or hair growth ingredients like caffeine or niacinamide
- Store products containing this peptide away from direct sunlight and heat to maintain stability
Common questions
What is Biotinoyl Hexapeptide-2 Amide in beauty products?
This ingredient is a lab-made peptide (a small protein fragment) attached to biotin (a B vitamin). In skincare and haircare products, it's used to signal skin and hair follicle cells to produce more collagen and keratin, which can lead to stronger hair and firmer skin. Think of it as a tiny messenger that tells your cells to work harder at keeping you looking healthy.
What does Biotinoyl Hexapeptide-2 Amide do in a beauty product?
Once applied, the peptide portion binds to receptors on skin and hair follicle cells, triggering a cascade that boosts the production of collagen, elastin, and keratin. The biotin component may enhance the peptide's stability and delivery. Over time, this can lead to thicker hair strands and improved skin elasticity.
Is Biotinoyl Hexapeptide-2 Amide safe for most people?
Considered safe for cosmetic use at typical concentrations. Mild irritation is rare but possible in sensitive individuals. No serious adverse effects have been reported in available studies.
Who should be careful with Biotinoyl Hexapeptide-2 Amide?
Individuals with known allergies to biotin or peptide-based ingredients Those with severely irritated or broken skin on the application area
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.