Melanotan 1 (MT-1)

Melanotan 1 is an engineered peptide intended to reproduce aspects of the activity of endogenous alpha-melanocyte-stimulating hormone. It has been investigated in relation to pigment formation, while the supplied guide also discusses cosmetic interest in darker skin coloration.

Alpha-melanocyte-stimulating hormone participates in the biological regulation of skin coloration. Melanin contributes to the skin's response to ultraviolet radiation, but greater pigmentation should not be interpreted as establishing protection against skin cancer.

The proposed mechanism involves mimicking a natural hormonal signal associated with melanin synthesis. The notes link this process to changes in skin coloration but provide no receptor-specific findings or experimental measurements.

1. 01

   Molecular target

2. 02

   Cellular signal

3. 03

   Biological process

LEVEL 01 · Basic biology

A biological mechanism or molecular interaction is described. No claim about human outcomes.

Evidence levels reflect the state of documented research only. They are not rankings of popularity, quality or suitability, and a higher level never implies that a compound is an approved medicine.

The source presents the compound as having originated from efforts to investigate whether increasing pigmentation could lower the risk of skin malignancy. It also describes interest in appearance-related tanning and possible effects on ultraviolet responses and skin condition. These statements are presented without supporting study details and do not establish preventive or therapeutic benefit.

Source: The Complete Guide to Peptides: Unlocking the Secrets to Health, Healing and Longevity — Hack Smith, Chapter 6, Introduction to Peptides (page references not verified)

Summarised in our own wording from the cited reference. The reference is a popular guide, not peer-reviewed literature; its statements are reported here as source claims rather than established facts.

Dosage, reconstitution and administration guidance is deliberately excluded from this platform.

The supplied material does not establish the strength of evidence for its proposed benefits or distinguish experimental findings from anecdotal reports. Sustained effects on pigment-producing cells and endocrine signaling remain insufficiently characterized in these notes.

Safety data are limited in the supplied material, despite the guide's favorable characterization of tolerability. The guide lists facial reddening, gastrointestinal symptoms, occasional appetite changes, and increased prominence of freckles or other pigmentation changes as possible adverse effects. This summary is educational and is not medical advice.

Research-stage compound unless otherwise established by a competent authority. Regulatory classification differs between jurisdictions and can change over time; nothing here indicates marketing authorisation.

Primary reference for this entry:

The Complete Guide to Peptides: Unlocking the Secrets to Health, Healing and Longevity — Hack Smith, Chapter 6, Introduction to Peptides (page references not verified)

Suggested literature search terms taken from the source. They are search starting points, not citations to specific studies.

• “Melanotan 1 tanning peptide”
• “Melanotan 1 skin pigmentation and UV protection”
• “Melanotan 1 side effects and safety”

Editorial status

source reviewed

Last updated

2026-09-14

Last reviewed

2026-09-13

Language

EN