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Melanotan I

Melanotan I is a lab-made version of a natural hormone that helps the skin darken and protect itself from sunlight. It works by encouraging the body to produce more melanin, which gives the skin a tan and adds protection from UV damage. Researchers study it for safe tanning and for conditions that make the skin sensitive to light.

Description

• Melanotan I is a synthetic analog of the natural alpha-melanocyte-stimulating hormone (α-MSH).
• It activates the melanocortin-1 receptor (MC1R) on skin cells to increase eumelanin production and enhance photoprotection.
• Developed for safe tanning and medical use in light-sensitive skin disorders.

How It Works

• Binds to MC1R receptors on melanocytes to increase melanin synthesis (skin pigmentation).
• Melanin reduces oxidative stress and provides a natural barrier against UV-induced DNA damage.
• Also exhibits mild antioxidant and anti-inflammatory properties through melanocortin receptor activation.

Documented Effects

• Promotes gradual, even tanning without UV exposure.
• Increases sunlight tolerance and reduces risk of sunburn.
• May reduce oxidative damage and support DNA repair in skin tissue.
• Investigated for benefits in vitiligo, photodermatoses, and skin aging studies.

Theoretical Effects

• Potential cosmetic applications for controlled sunless tanning and long-term skin protection.
• Possible support for skin barrier integrity and antioxidative defense systems.
• Under investigation for broader systemic benefits via melanocortin receptor pathways.

Pharmacokinetics

• Half-life: Approximately 30–60 minutes after subcutaneous injection.
• Time to peak concentration: Within 1 hour of administration.
• Steady-state: Reached after ~5 days of daily administration.

Duration of Effects

• Skin darkening develops gradually over 1–2 weeks of consistent use.
• Effects last 2–4 weeks after discontinuation depending on UV exposure and skin turnover.
• Maintenance dosing sustains pigmentation longer with minimal rebound fading.

Reconstitution

• Use bacteriostatic water for reconstitution.
• Example vial: 10 mg Melanotan I
• Choose reconstitution volume based on dosing convenience:
  • 1 mL water → 10 mg/mL → 1 mg per 10 units
  • 2 mL water → 5 mg/mL → 500 mcg per 10 units
• Swirl gently until dissolved; avoid shaking.
• Refrigerate reconstituted solution (2–8 °C). Use within ~21 days for best stability.

Injectable Dosage Overview (Research Reference)

Typical Starting Dose

• Conservative entry: 250 mcg subcutaneous (SC) daily.
• Gradually increase as tolerated up to 500–1000 mcg SC daily.
• Often combined with controlled UV exposure for gradual pigmentation development.

Common Research Range

• Typical: 250–1000 mcg SC daily or every other day for 2–4 weeks.
• Maintenance: 250 mcg 2–3× weekly once desired pigmentation achieved.

Maximum Daily Dose

• Do not exceed 1 mg daily during loading phase.
• Higher or prolonged dosing may increase side effects such as nausea or excess pigmentation.

Standard Cycle Length

• Loading phase: 2–4 weeks until desired skin tone develops.
• Maintenance phase: 1–2 injections weekly to sustain color and protection.

Clinical Notes

• Administer subcutaneously, ideally in the evening to minimize nausea.
• Combine with moderate sunlight or tanning exposure for best pigment activation.
• Rotate injection sites to prevent local irritation.
• Stable refrigerated; avoid freezing or prolonged heat exposure.
• Stable for about 21 days when refrigerated (2–8°C). Protect from light and heat. Avoid freezing.

Safety Notes

• Generally well tolerated; mild nausea, flushing, or darkened moles possible during early use.
• Prolonged use should include periodic skin checks for irregular pigmentation changes.
• Ensure pharmaceutical-grade purity; avoid unverified or mislabeled formulations.
• Not an FDA-approved cosmetic or tanning product; intended for controlled research contexts.