Peptides

Tetrapeptide-30

Reviewed by Daisy · Last updated 6 May 2026

Also known as: PKEK, Skin Lightening Peptide

Brightening peptide for even skin tone

Best For Skin Types

Sensitive, All

Addresses

hyperpigmentation, uneven skin tone, dark spots

What Is Tetrapeptide-30?

Tetrapeptide-30 is a peptide specifically designed to address hyperpigmentation and uneven skin tone. It works by modulating melanin production pathways, helping to reduce the appearance of dark spots and discolouration.

This targeted peptide offers a gentle approach to skin brightening without the irritation associated with some traditional lightening agents. It is particularly suitable for sensitive skin types seeking tone correction.

Benefits for Your Skin

How It Works

Tetrapeptide-30 is a synthetic peptide containing the amino acids proline, glutamic acid, and lysine. It acts on and within specific targets of skin to reduce factors and interrupt the pathways that lead to the appearance of discolorations and uneven skin tone. Tetrapeptide-30 also has skin-calming ability and can help revitalize a dull skin tone. It is supplied in a blend with glycerin and water, and the blend’s usage level for efficacy is between 0.5–5%.

Clinical Evidence & References

References:

  • European Journal of Pharmaceutics and Biopharmaceutics, March 2018, pages 28-33 View Study
  • Cosmetics, May 2017 ePublication View Study

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