Acetyl Hexapeptide-71 Amide: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
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All information on this page is verified using The Personal Care Products Council's (PCPC) INCI database. Our ingredient analyses are based exclusively on PCPC's technical data to ensure accuracy and reliability.

What Is Acetyl Hexapeptide-71 Amide?

Acetyl Hexapeptide-71 Amide is a lab-crafted peptide made by attaching an acetyl group to Hexapeptide-71 and turning the end of the molecule into an amide. This small tweak helps the peptide stay stable and work well on skin. Peptides like this one were first noticed by cosmetic chemists in the early 2000s when they were searching for gentle alternatives to harsher anti-aging ingredients. The process starts with fermenting plant-derived amino acids to create the six-unit peptide, then chemists add the acetyl group and finish with amidation to improve skin affinity. Thanks to its soothing character it now appears in lightweight serums, sheet masks, eye creams, daily moisturizers and premium anti-aging treatments.

Acetyl Hexapeptide-71 Amide’s Cosmetic Benefits/Uses

This peptide is prized for its role as a skin-conditioning agent. By helping skin hold on to water and supporting a smooth surface it can leave the complexion looking softer and more refreshed, which is why formulators slot it into hydrating and youth-boosting products.

Who Can Use Acetyl Hexapeptide-71 Amide

Because it is a gentle conditioning peptide, Acetyl Hexapeptide-71 Amide suits most skin types including dry, oily, combination and sensitive skin. It does not contain known pore-cloggers or harsh actives, so even reactive complexions usually tolerate it well. Those with highly compromised or broken skin barriers should still proceed with caution since any peptide could sting on raw areas, but this is the exception rather than the rule.

The ingredient is synthesized in a lab from plant-derived amino acids, so it is compatible with vegan and vegetarian lifestyles. No animal by-products are involved during production or purification.

Current data shows no specific hazards for pregnant or breastfeeding women when the peptide is used topically at the low concentrations found in cosmetics. This is not medical advice and anyone who is expecting or nursing should run all skincare choices past a qualified healthcare professional to be safe.

Acetyl Hexapeptide-71 Amide does not make skin more sensitive to sunlight. Regular daytime sunscreen use is still recommended as part of any good routine but extra precautions are not required specifically because of this peptide.

Potential Side Effects/Adverse Reactions

Reactions to topical Acetyl Hexapeptide-71 Amide vary from person to person. The following points outline potential side effects that may occur in rare cases. When the ingredient is correctly formulated most users experience none of these issues.

  • Mild redness or warmth shortly after application
  • Temporary itching on very sensitive skin
  • Minor stinging if applied to broken or freshly exfoliated areas
  • Allergic contact dermatitis in individuals with specific peptide sensitivities

If any persistent irritation or unexpected reaction occurs discontinue use and seek advice from a healthcare professional.

Comedogenic Rating

Rating: 0 / 5

Acetyl Hexapeptide-71 Amide is a small water-soluble peptide that sits on the skin surface and absorbs quickly instead of pooling inside pores. It contains no oily carriers or waxy structures that could block follicles so it earns the lowest possible score. This makes it a safe pick for people prone to acne or congestion. The only caveat is that finished products may pair the peptide with richer emollients; in that case the other ingredients, not the peptide itself, would decide the pore-clogging risk.

Summary

Acetyl Hexapeptide-71 Amide is mainly a skin-conditioning agent that helps the surface hold water and look smoother. By stabilising the skin’s hydration balance it softens texture and gives a refreshed appearance without harsh actives. Although effective it remains a niche peptide seen mostly in higher-end serums eye creams and masks, not yet a household name like hyaluronic acid or retinol.

Current research shows it is low risk and generally well tolerated with rare reports of mild irritation. As with any new skincare ingredient it is wise to patch test a product before full use just to be cautious.

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