Research Comparison

Melanotan I vs Melanotan II

Side-by-side research summary. Tiers and mechanisms reflect the current state of the literature. No clinical advice.

Skin / Cosmetic

Melanotan I

Tier B+

Alpha-MSH analog (afamelanotide) studied for MC1R activation, eumelanin production, light tolerance, and photoprotection biology in erythropoietic protoporphyria research.

Sources: 11
Last updated: Jun · 2026

Open the Melanotan I file

Skin / Cosmetic

Melanotan II

Tier B

Synthetic cyclic alpha-MSH analog and nonselective melanocortin receptor agonist studied for MC1R-driven pigmentation, sexual-response signaling, and neuroendocrine melanocortin pathways.

Sources: 14
Last updated: Jun · 2026

Open the Melanotan II file

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