Matrixyl (Palmitoyl Pentapeptide-4)

A cosmetic signal peptide used in topical skincare formulations and commonly discussed in relation to skin appearance.

Commonly discussed or studied in relation to:

It appears in many cosmetic serums and creams, and is often discussed in beauty media as a peptide ingredient studied in relation to the appearance of skin texture and fine lines.

Some small human cosmetic studies exist, generally measuring appearance-related outcomes rather than medical endpoints. Study quality and independence vary.

Human research: Human studies available.

Used as a cosmetic ingredient. Cosmetic ingredients are regulated differently from drugs and are not reviewed for medical claims.

Approval for one specific indication never implies approval or suitability for wellness, cosmetic, or anti-aging uses.

• It is widely used as an ingredient in topical cosmetic products.
• Several small studies have looked at appearance-related measures of skin.

• How results compare across different formulations and concentrations.
• How outcomes differ across skin types, ages, and long-term use.

• Cosmetic ingredient studies often measure appearance, not medical outcomes.
• Formulation, concentration, and product quality vary widely between brands.

• What evidence supports this peptide for the goal I'm interested in?
• Is this peptide approved for this particular use?
• What benefits are supported by human evidence?
• What risks or side effects should I understand?
• What important unknowns remain?

• Overview literature relating to Matrixyl

  Placeholder — reputable reference to be added · Pending review

• Regulatory status information

  Placeholder — official regulatory source to be added · Pending review

Last reviewed: 2026-08-01