Tanning injections have gained popularity in recent years as a quick and easy way to achieve a radiant summer glow — without sun exposure.
Instagram and TikTok influencers have been enthusiastically promoting the so-called “Barbie drug” as a safer alternative to UV tanning. Recent posts have emphasized the advantages of tanning injections, such as faster tanning, reduced risk of sunburn, and a more even skin tone.
However, melanotan-II, as it’s officially called, is a solution that’s too good to be true. And just like traditional tanning, this unapproved drug has a dark side.
What Is Melanotan?
Melanotan is a synthetic peptide hormone, primarily used to artificially darken the skin. Melanotan stimulates melanocytes, the cells responsible for producing melanin, the pigment that gives skin its color. This stimulation results in a deep tan, even with minimal or no sun exposure.
Types of Melanotan Peptides
To be clear, there are two main types of melanotan:
Melanotan-I: Also known as afamelanotide, melanotan-I is FDA-approved under the brand name Scenesse for treating erythropoietic protoporphyria (EPP). This rare genetic disorder causes severe light sensitivity and skin pain upon sun exposure.
Melanotan-II: Melanotan-II is related to but distinct from afamelanotide. It works similarly to darken the skin, but its effects are less selective. By binding to receptors in the central nervous system, melanotan-II can also suppress appetite and enhance libido. Its multiple cosmetic effects have earned it the colloquial nickname “the Barbie drug” on social media platforms.
Melanotan-II is not regulated or approved by the U.S. Food and Drug Administration (FDA) for human use. So far, no manufacturer has completed the necessary testing for approval. Consequently, it’s illegal to market or sell the drug for any purpose other than research in the United States. However, it’s still possible to purchase it online as a nasal spray or subcutaneous injection. Since it’s not regulated, consumers should be aware that there’s no guarantee of product safety, effectiveness, or even purity.
Risks and Side Effects of Melanotan-II
Since melanotan-II stimulates the creation of pigment, it has gained popularity as a tanning product. But using the drug comes with numerous risks. Melanotan-II can cause your skin to darken unevenly, resulting in visible irregularities in skin tone. It can also make existing moles larger, darker, and cause new moles to grow. Most importantly, there’s concern that long-term use of melanotan-II can increase the risk of skin cancer. Other side effects include:
Melanonychia: Brown or black lines on the nails.
Priapism: Spontaneous, painful erections lasting more than four hours. This particular side effect is considered a medical emergency that can cause permanent tissue damage.
Systemic Toxicity: Users often experience severe nausea, vomiting, facial flushing, and headaches. In more severe cases, kidney failure and brain swelling have been reported.
Contamination Risks: Melanotan-II is often manufactured in unlicensed black-market labs, lacks sterility testing, and may contain heavy metals or harmful biological impurities. Injection use increases the risk of infection.
Due to the documented dangers associated with melanotan-II, global health agencies, including the U.S. Food and Drug Administration (FDA), Cancer Research UK, and Australia’s Therapeutic Goods Administration (TGA), strongly advise against its use.
Final Thoughts
Melanotan-II may offer a faster route to darker skin, but its use carries substantial risks. Melanotan-II lacks regulatory oversight, which could lead to severe health consequences. High-quality clinical research on the safety of Melanotan-II is limited, especially regarding its long-term and repeated use. The available information comes from small studies, case reports, and user-reported side effects.
Melanotan-II products aren’t approved for any medical or cosmetic purpose, and their safety profile remains uncertain. Side effects can range from mild to severe and, in some cases, even life-threatening. Until further research is conducted, the safety of melanotan-II remains uncertain, and it will continue to be classified as an illegal drug in the United States.