Acetyl Sh-Hexapeptide-5 Amide Acetate: 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 Sh-Hexapeptide-5 Amide Acetate?

Acetyl Sh-Hexapeptide-5 Amide Acetate is a lab made peptide, meaning it is a short chain of amino acids linked together. After the peptide is built, it is acetylated, then turned into its acetate salt form to help keep it stable and easy to use in skin care formulas. The peptide idea comes from signal molecules the body naturally uses to keep skin looking firm and smooth. It first gained attention in research labs looking for gentler options to soften the look of lines, and it soon found a place in premium skin care ranges in the early 2010s. Production starts with solid phase peptide synthesis, where each amino acid is added one by one in a controlled setting. Once the chain is complete, chemists cap the end with an acetyl group, convert it to the acetate salt, then purify it so it meets cosmetic grade standards. You will mostly see this ingredient in serums, eye creams, sheet masks, anti aging moisturizers and targeted wrinkle treatments thanks to its skin firming reputation.

Acetyl Sh-Hexapeptide-5 Amide Acetate’s Cosmetic Benefits/Uses

This peptide is valued in formulas for its single main role: skin conditioning. By helping the skin surface feel softer and look smoother, it supports a healthier and more youthful appearance. Regular use can improve texture, boost suppleness and enhance overall comfort, making the product feel more luxurious on application.

Who Can Use Acetyl Sh-Hexapeptide-5 Amide Acetate

This peptide is gentle enough for most skin types including dry, normal, combination, oily and even sensitive skin since it is non acidic and non exfoliating. Those with known allergies to specific peptides or preservatives in the finished product should proceed with caution, otherwise there are no major exclusions.

Because the molecule is made entirely by chemical synthesis and contains no animal derived materials it is considered suitable for both vegans and vegetarians.

Current data shows no specific risks for women who are pregnant or breastfeeding when the ingredient is used topically at standard cosmetic concentrations. That said this is not medical advice and anyone who is expecting or nursing should review any new skincare item with their physician first to stay on the safe side.

Acetyl Sh-Hexapeptide-5 Amide Acetate does not absorb UV light or increase skin sensitivity to the sun, so it is not linked to photosensitivity. It layers well with most other cosmetic actives and does not require a special pH environment which makes it easy to fit into existing routines.

Potential Side Effects/Adverse Reactions

Side effects and reactions to the topical use of Acetyl Sh-Hexapeptide-5 Amide Acetate can vary from person to person. The following is a list of potential side effects, yet most users will not experience them when the ingredient is properly formulated and used as directed.

  • Mild redness or warmth at the application site
  • Temporary itching or stinging
  • Localized swelling such as puffy eyelids if applied too close to the eye
  • Contact dermatitis in individuals sensitive to peptides or formulation preservatives
  • Interaction-related irritation when layered immediately after high strength exfoliating acids

If any unwanted reaction develops stop using the product and consult a healthcare professional if symptoms persist or worsen.

Comedogenic Rating

Rating: 0/5 Acetyl Sh-Hexapeptide-5 Amide Acetate is a small, water-soluble peptide used at very low concentrations, so it does not sit in pores or create an occlusive film that could trap sebum or debris. It lacks fatty acids, heavy oils or waxes that usually trigger breakouts, and current formulation data shows no link to pore blockage. This makes it suitable for people who are prone to acne or congestion. Because the ingredient is normally paired with lightweight carriers such as serums and gels, there is minimal risk of it contributing to blackheads or whiteheads.

Summary

Acetyl Sh-Hexapeptide-5 Amide Acetate is a lab-crafted peptide that conditions the skin by signaling for a smoother, firmer surface, which helps improve texture and comfort. It works at the skin’s outer layers, supporting a plump, soft feel without exfoliation or irritation. While not as famous as hyaluronic acid or retinol, it has carved out a steady place in high-end serums, eye creams and sheet masks thanks to its gentle firming appeal. Safety profiles are favorable, with low irritation rates and a non-comedogenic nature, but as with any new skincare ingredient it is wise to perform a quick patch test before full-face use to ensure personal tolerance.

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