Peptides

Palmitoyl Glycine

INCI: PALMITOYL GLYCINE

Reviewed by Kate · Last updated 14 Aug 2026

Also known as: Palmitoyl Glycine

A fatty acid derivative with potential applications in drug delivery and skin conditioning

Best For Skin Types

All, Dry, Sensitive

Addresses

Dryness, Hydration, Barrier repair

Usage Frequency

Daily

What Is Palmitoyl Glycine?

Palmitoyl Glycine is a lipophilic compound formed from palmitic acid (a saturated fatty acid) and glycine (an amino acid). It belongs to a class of molecules called N-acyl amino acids, which occur naturally in the body and have been the subject of pharmaceutical research for their ability to enhance the permeation of active ingredients through the skin barrier.

In cosmetics, it functions primarily as a conditioning agent and cleansing ingredient. Its structure allows it to interact with the skin's lipid-rich outer layer (the stratum corneum), which has led to investigation of its use in formulations designed to improve the delivery of other actives.

How It Works

Palmitoyl Glycine is a lipophilic molecule that can integrate into the skin's stratum corneum—the outermost, lipid-rich layer. By interacting with the skin's natural fats and proteins, it can help condition the skin surface and improve hydration retention.

In pharmaceutical applications, research indicates it may enhance skin permeation by temporarily altering the barrier's structure in ways that allow other molecules to pass through more readily. However, the precise mechanisms in cosmetic formulations remain incompletely understood, and its role is typically supportive rather than transformative.

Clinical Evidence & References

Most published research on Palmitoyl Glycine has focused on its use as a permeation enhancer for delivering pharmaceutical compounds (such as antiparasitic and antimicrobial agents) through the skin. These studies suggest it can improve the skin penetration of both lipophilic and hydrophilic drugs when incorporated into gel-based formulations, often combined with other penetration enhancers.

Evidence specifically addressing its standalone cosmetic benefits in skincare products is limited. While its chemistry suggests it should function adequately as a conditioning agent, direct comparative studies in consumer skincare formulations are sparse, so claims about its efficacy should be considered provisional.

How to Use

Palmitoyl Glycine is typically used as one ingredient within a larger formulation rather than as a standalone active. It is most effective when part of a well-formulated product designed to support overall skin hydration and barrier health. Apply as directed by the specific product, usually as part of a cleanser or conditioning treatment.

Safety & Precautions

Palmitoyl Glycine is generally regarded as well-tolerated in cosmetic formulations. As with any ingredient, patch testing is advisable if you have particularly sensitive or reactive skin.

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