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CALIBERPEPTIDES

Melanotan II

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Melanotan II

Tan & Libido

10mg × 10 vials — Skin & Appearance

10 vials — 12 months supply

Widely used worldwide for tanning. One of the most popular non-medical peptides.

$260

= $0.71/day

What it does

Melanotan II is a synthetic analogue of alpha-melanocyte-stimulating hormone (a-MSH). It activates MC1R receptors in melanocytes to increase melanin production (darker skin), and MC3R/MC4R receptors in the hypothalamus which affect appetite and sexual arousal. The tanning effect is long-lasting and cumulative.

The melanocortin system is broad — which explains why a single compound produces effects on pigmentation, appetite, and libido simultaneously.

Dosage & Protocol

Subcutaneous injection. Loading: 0.25-0.5mg/day for 2-3 weeks. Maintenance: 0.25mg every 2-3 days. Minimal UV exposure helps activate melanocytes. 10 vials provides 12+ months.

Duration

12 months

Format

10-vial protocol box

Purity

99%+ (CoA verified)

Delivery

7-14 days worldwide

What to expect

1

Week 1: Possible facial flushing and mild nausea after injection. Subtle darkening may begin.

2

Week 2-3: Loading phase complete. Noticeable tan developing, especially with brief sun exposure.

3

Month 1-2: Significant melanin increase. Deep, even tan established. Libido effects commonly reported.

4

Maintenance: Tan maintained with infrequent dosing every few days. Fades gradually if discontinued.

Who it's for

Researchers studying melanogenesis and UV protection

Those looking for enhanced melanin production without extended UV exposure

Fair-skinned individuals interested in developing a base tan safely

Researchers studying melanocortin receptor pathways

📖

Read the full Melanotan II profile in the Peptide Bible

Dosing protocols, stacking guides, safety data, and research references.

The research

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Developed at University of Arizona — significant melanin increase with minimal UV exposure(UArizona-MT2)

Safety notes

⚠️Common: Nausea, facial flushing, injection site reactions. Usually mild and decrease with use.

⚠️Melanocortin cross-reactivity produces secondary appetite and libido effects.

⚠️Long-term safety data limited. Monitor any new or changing moles.

Pairs well with

PT-141

Related melanocortin compound for sexual health enhancement

GHK-Cu

Systemic skin improvement alongside melanin production

Complete Your Protocol

Sexual Health Protocol

Bacteriostatic Water

Essential for Reconstitution

Frequently Asked Questions

Start My Tan & Libido

10mg × 10 vials — 12 months supply — $260 — $0.71/day

Includes Peptide Bible, CoA certificate, and Telegram support