Ingredient guide
Heptapeptide-9
INCI name · heptapeptide-9
In short
Heptapeptide‑9 is a short peptide designed to reduce the appearance of uneven pigmentation by targeting signals inside melanocytes. It aims to help skin look more even‑toned over time.
Works forFrom reviewed ingredient data
Best used
Morning
What it is
Seven amino acid peptide designed to inhibit melanogenesis at the post-receptor level; proposed mechanism involves downregulation of MITF (microphthalmia-associated transcription factor), the master regulator of melanocyte differentiation and tyrosinase gene expression; in vitro studies in B16 melanoma cells show dose-dependent reduction in melanin content at 1–10 ppm; the upstream MITF target means it acts independently of, and additively with, tyrosinase inhibitors such as kojic acid and arbutin.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
When to use it
Mornings suit it best.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- Heptapeptide-9
- Moisturise
- SPF
Also found as
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Check an ingredient listCommon questions
What does Heptapeptide‑9 do for skin?
It helps reduce the look of dark spots by influencing pathways involved in pigment production.
Who can use Heptapeptide‑9?
Anyone interested in a more uniform‑looking complexion may consider it.
How is Heptapeptide‑9 used?
It’s typically formulated into brightening serums and can be paired with gentle exfoliants or antioxidants.
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Personal guidance, not medical advice.