Peptides

Pentapeptide-13

INCI: PENTAPEPTIDE-13

Reviewed by Rosie · Last updated 14 Aug 2026

A peptide that conditions skin and supports structural integrity

Best For Skin Types

All, Mature, Dry, Combination

Addresses

Fine lines, Firmness, Skin texture, Elasticity

Usage Frequency

Daily

What Is Pentapeptide-13?

Pentapeptide-13 is a short chain of five amino acids—the building blocks of proteins found naturally in skin. In skincare formulations, it functions as a skin conditioning agent, helping to improve the texture and feel of the skin's surface.

Peptides like this one are designed to interact with skin cells and may support the skin's natural processes. They are often included in anti-aging and firming products because they target concerns related to skin structure and elasticity.

How It Works

Pentapeptide-13 works at the cellular level by signalling to skin cells and supporting the maintenance of structural proteins. As skin ages, collagen and elastin—the proteins responsible for firmness and elasticity—naturally decline. This peptide may help counteract some of these changes by reinforcing the skin's protein network.

The ingredient acts as a skin conditioner, which means it helps smooth and soften the skin's surface while potentially communicating with deeper layers to support skin resilience and appearance.

Clinical Evidence & References

Research on aging skin demonstrates that loss of dermal collagen and thinning of skin layers are primary contributors to visible signs of aging, including wrinkles and loss of elasticity. Peptides, as a class of ingredients, have been studied for their potential to support skin structure and firmness by signalling cells to maintain or produce structural proteins.

Evidence specifically on pentapeptide-13 is limited in publicly available literature. As with many cosmetic peptides, efficacy data tends to come from manufacturer-sponsored studies. More independent research would help clarify its specific benefits and optimal use concentration.

How to Use

Pentapeptide-13 is typically found in serums, creams, and treatment products. Apply to clean skin as part of your regular routine. It pairs well with other skin-supporting ingredients like hyaluronic acid and antioxidants. Allow the product to absorb fully before applying sunscreen or other layered products, and use consistently over several weeks to assess results.

Safety & Precautions

Peptides are generally well-tolerated by most skin types. However, those with known sensitivities to proteins or amino acids should patch test first. Discontinue use if irritation occurs.

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