Peptides

Palmitoyl Tripeptide-37

INCI: PALMITOYL TRIPEPTIDE-37

Reviewed by Daisy · Last updated 14 Aug 2026

Also known as: Palmitoyl Tripeptide-37

A peptide derivative designed to support skin conditioning and resilience

Best For Skin Types

All, Dry, Mature, Sensitive

Addresses

Fine lines, Loss of firmness, Barrier support

Usage Frequency

Daily

What Is Palmitoyl Tripeptide-37?

Palmitoyl Tripeptide-37 is a synthetic peptide — a short chain of amino acids with a palmitoyl (fatty acid) group attached to its structure. This modification allows the ingredient to penetrate the skin more effectively and interact with skin cells at a deeper level.

In formulations, it functions primarily as a skin conditioning agent, working to support the skin's natural processes and help maintain a healthy skin barrier. It is used in a range of facial care products, typically at modest concentrations.

How It Works

Peptides like Palmitoyl Tripeptide-37 work by signalling to skin cells, potentially stimulating natural processes involved in maintaining skin structure and function. The palmitoyl fatty acid component helps the peptide penetrate the skin more efficiently, allowing it to reach viable skin cells where it can exert its effects.

The precise cellular mechanisms are still being explored in research, but peptides are believed to interact with receptors on skin cells in ways that may support collagen production and skin barrier integrity.

Clinical Evidence & References

Evidence on Palmitoyl Tripeptide-37 specifically is limited in published literature. Most research on similar peptides suggests they can support skin conditioning and may have benefits for skin firmness and barrier function, though the degree of benefit varies.

As with many cosmetic peptides, claims should be approached with appropriate caution. While peptides are generally well-studied as a class of ingredient, individual peptide variants often lack robust clinical data in human trials, making it difficult to quantify their efficacy with certainty.

How to Use

This ingredient is typically found in serums, moisturisers and targeted treatments. As with other peptide-based products, consistent use over several weeks is likely necessary to observe any potential benefits. It can generally be incorporated into both morning and evening routines without issue.

Safety & Precautions

Peptides are generally well-tolerated across skin types. However, those prone to fungal acne should note that some peptides can potentially feed malassezia; patch testing is advisable if you have this concern.

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