Acetyl Hexapeptide-24 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-24 Amide?

Acetyl Hexapeptide-24 Amide is a lab-made chain of six amino acids that has been capped with a small acetyl group at one end and turned into an amide at the other. This tweak helps the peptide stay stable and work well on skin. It does not come from plants or animals; instead, it is produced through controlled fermentation or solid-phase peptide synthesis, then purified and reacted with acetic acid to finish the structure. Peptides rose to fame in the early 2000s when scientists showed they could signal skin to act younger, and this particular hexapeptide was soon added to anti-aging formulas for its skin-conditioning talent. Today you will spot it in lightweight serums, eye creams, sheet masks, day and night moisturizers and leave-on treatments aimed at improving skin texture and firmness.

Acetyl Hexapeptide-24 Amide’s Cosmetic Benefits/Uses

This ingredient serves one main role: skin conditioning. By helping skin hold moisture and supporting a smoother surface it can make the complexion feel softer and look more even, which is why formulators add it to products that promise a healthier, revitalized appearance.

Who Can Use Acetyl Hexapeptide-24 Amide

This peptide suits most skin types including normal, dry, oily and combination because it is lightweight and non greasy. Sensitive skin usually tolerates it as well since it is fragrance free and has a small molecular size that does not tend to irritate. People with very reactive or compromised skin should still monitor how their skin feels after each use, as they would with any new active.

Because it is made in a lab and contains no animal-derived material it is suitable for vegans and vegetarians. Its synthetic origin also means there are no common food allergens such as dairy, soy or nuts involved in its production.

No studies have shown that Acetyl Hexapeptide-24 Amide is harmful to women who are pregnant or breastfeeding when used on the skin. That said this is not medical advice and anyone who is expecting or nursing should check with a qualified doctor before adding any new product to a routine.

The peptide does not make skin more sensitive to sunlight so you do not need special precautions beyond the daily SPF that dermatologists already recommend.

Potential Side Effects/Adverse Reactions

Side effects from topical Acetyl Hexapeptide-24 Amide vary from person to person. The points below list potential reactions though they are uncommon when the ingredient is formulated and used correctly.

  • Mild redness or warmth right after application
  • Temporary itching or stinging in sensitive areas
  • Rare allergic contact dermatitis marked by persistent rash or swelling
  • Interaction with other strong actives such as high-percentage acids or retinoids leading to cumulative irritation

If you notice any lasting discomfort stop using the product and consult a healthcare professional or dermatologist for guidance.

Comedogenic Rating

Rating: 0 out of 5. Acetyl Hexapeptide-24 Amide is a small, water-soluble peptide that does not contain heavy oils, waxes or fatty acids that can block pores, so it earns the lowest score for clogging potential. It sits lightly on the surface, absorbs quickly and rinses away easily when you cleanse. This makes it appropriate for people who are prone to acne or breakouts. Keep in mind that the finished formula matters too; if the serum or cream pairs the peptide with rich butters or comedogenic oils, the overall product could still trigger congestion.

Summary

Acetyl Hexapeptide-24 Amide is primarily a skin-conditioning peptide that helps skin hold moisture, feel softer and appear smoother by mimicking signals the skin naturally uses to stay resilient. Its lab-made structure keeps it stable and effective while remaining vegan friendly.

The ingredient enjoys moderate popularity in anti-aging eye creams, serums and masks. It is not as famous as blockbuster peptides like Matrixyl or copper peptides, yet formulators appreciate its gentle profile and compatibility with most skin types.

Current data shows it is safe for topical use with only rare reports of irritation or allergy. As with any new skincare ingredient it is wise to patch test a small area first to check for personal sensitivity and then enjoy the benefits if no reaction occurs.

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