What is Melanotan II (MT2)?

Melanotan II (MT2) is a synthetic peptide and an analogue of the α-melanocyte-stimulating hormone (α-MSH). In scientific studies, it is primarily investigated for its ability to activate melanocortin receptors in the body.

The main effect of Melanotan II is related to the stimulation of melanin production – the pigment responsible for skin color. By activating specific receptors, MT2 can accelerate skin pigmentation upon UV exposure, making it a subject of study in dermatological research projects.

Furthermore, Melanotan II shows an affinity for receptors linked to sexual function and libido. It is therefore also studied in research on sexual health and behavioral regulation.

Potential Benefits of Melanotan II

Stimulation of melanogenesis

MT2 can promote melanin production, allowing for more uniform skin pigmentation with reduced UV exposure.

Photoprotective effect

High melanin levels can improve the skin's natural protection against UV rays.

Support for sexual function

Studies examine the effect of Melanotan II on libido and erectile function, as the peptide activates central melanocortin pathways.

Influence on well-being

In some experimental models, subjective improvements in mood and emotional well-being have been observed.

Mechanism of Action of Melanotan II

Melanotan II acts by activating various melanocortin receptors, including MC1R and MC4R.

MC1R Receptors

Activation of these receptors stimulates melanin production in melanocytes, the cells responsible for skin pigmentation.

MC4R Receptors

These receptors are linked to neuroendocrine processes, including the regulation of sexual motivation and behavior.

Dosage and Use of Melanotan II (MT2)

Typically, 250 µg to 500 µg per application, or 5 to 10 units, three times a week. The injection is administered subcutaneously in the abdominal area or the front of the thigh. Wait 10 seconds before removing the needle and regularly change the injection site.

Dosage Information

One pen contains 200 units of 50 µg each. One Melanotan II pen (10 mg) lasts approximately 2 to 3 months depending on the dosage.

Dosage Examples

1 unit — 50 µg | 5 units — 250 µg | 8 units — 400 µg | 10 units — 500 µg

Research Cycle Example

Weeks 1–2: 3 applications/week of 8 units
Week 3: 2 applications/week of 8 units
Week 4: 1 application/week of 8 units
From week 5: adjust according to desired pigmentation level.

Combination with Other Peptides

PT-141 (Bremelanotide)

A peptide used specifically to study libido and sexual function. The combination with Melanotan II is being investigated for its effects on sexual motivation, erectile function, and female libido.

Possible Side Effects of Melanotan II

Melanotan II is considered well-tolerated when used under controlled conditions. Mild and transient side effects have been observed in some cases:

• Headaches
• Nausea
• Transient increase in blood pressure
• Slight muscle pain after injection

These symptoms typically appear at the beginning of use and quickly disappear. With correct dosing, Melanotan II exhibits good tolerance and a low risk of serious side effects.