Tripeptide-10 citrulline
Tripeptide-10 citrulline is a cosmetic peptide studied alone and with acetyl hexapeptide-3 for skin-surface and barrier-related measurements.
At a glance
- Regulatory status
- Cosmetic ingredient; cosmetic marketing or an ingredient listing is not FDA drug approval. Claims and intended use determine regulatory treatment.
- Research context
- Tripeptide-10 citrulline is a cosmetic peptide studied alone and with acetyl hexapeptide-3 for skin-surface and barrier-related measurements.
What this is
- Tripeptide-10 citrulline is a cosmetic peptide studied alone and with acetyl hexapeptide-3 for skin-surface and barrier-related measurements.
What this isn't
- A recommendation to use, prepare, combine, or administer a product
- Evidence that a related molecule or a differently formulated product has the same effects
Key terms
Tripeptide-10 citrulline is a cosmetic peptide studied alone and with acetyl hexapeptide-3 for skin-surface and barrier-related measurements.
Cosmetic explanations often invoke collagen organization, but the reviewed trial measured skin microtopography and transepidermal water loss rather than directly proving that mechanism. An improvement in those measurements would not by itself demonstrate new collagen formation or explain how the ingredient acts. Primary study.
Evidence limits
How to read the evidence
This is limited human cosmetic evidence, not approval of a medical treatment. Distinguish a statistically significant instrumental measurement from a noticeable, lasting improvement a person would value. The useful next questions concern replication, clinically meaningful effect size and tolerance across more varied skin types. The trial does not justify transferring its findings to every product containing tripeptide-10 citrulline.
Sources appraised 2026-10-28. Educational information; not medical advice. Study findings apply to the populations, preparations and outcomes described.
External sources and citations
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