Peptides

Palmitoyl Hexapeptide-27 Acetate

INCI: PALMITOYL HEXAPEPTIDE-27 ACETATE

Reviewed by Daisy · Last updated 14 Aug 2026

Also known as: Palmitoyl Hexapeptide-27 Acetate

A peptide derivative that helps support skin hydration and moisture retention

Best For Skin Types

All, Dry, Sensitive, Mature

Addresses

Dryness, Hydration

Effective Concentrations

0.5–2%

Usage Frequency

Daily

What Is Palmitoyl Hexapeptide-27 Acetate?

Palmitoyl Hexapeptide-27 Acetate is a synthetic peptide—a short chain of amino acids with a fatty acid (palmitoyl) attached to its structure. This modification helps the ingredient penetrate and interact with the skin more effectively than the peptide alone would.

In skincare formulations, this ingredient functions primarily as a humectant, meaning it helps attract and bind water to the skin's surface and upper layers, supporting overall hydration and moisture balance.

How It Works

Peptides like this one are believed to communicate with skin cells through signalling pathways, potentially triggering responses related to hydration and moisture management. The attached fatty acid (palmitoyl) component aids in skin penetration and helps the ingredient remain in the skin longer, rather than washing away immediately.

As a humectant, the ingredient also has a chemical affinity for water molecules, drawing them into the stratum corneum (the skin's outermost layer) where they plump cells and support a more hydrated appearance.

Clinical Evidence & References

Research into palmitoyl peptides is still emerging, and specific clinical studies on Palmitoyl Hexapeptide-27 Acetate alone are limited. Much of what we understand comes from broader research into peptide signalling in skincare and the known moisturising properties of humectant ingredients.

Formulation studies suggest that peptides of this type can be successfully incorporated into stable emulsions at concentrations around 0.5–2%, indicating they are compatible with modern skincare products. However, more independent clinical evidence would help clarify its specific efficacy in real-world use.

How to Use

This ingredient is typically found in serums, moisturisers and hydrating treatments. Use it as part of your regular skincare routine, layering it before heavier moisturising creams to maximise hydration. Since it works to attract water to the skin, ensure you're applying it to damp skin or following it with an occlusive product to seal in moisture.

Safety & Precautions

Palmitoyl Hexapeptide-27 Acetate is generally well-tolerated in skincare products. As with any peptide ingredient, those with sensitive skin should introduce it gradually and discontinue use if irritation occurs.

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