Tetrapeptide-30 at a glance

  • Peptide composed of amino acids proline, glutamic acid, and lysine
  • Helps interrupt pathways that lead to skin discolourations
  • Has soothing properties
  • Can revitalize a dull skin tone

Tetrapeptide-30 description

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 discolourations and uneven skin tone. Tetrapeptide-30 also has skin-calming ability and can help revitalise 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%.

Tetrapeptide-30 references

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

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.