Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and longer lasting than Melanotan Erectile Dysfunction: What the Early Research Shows and Practical Considerations Nasal tanning sprays and oral tanning drops are often marketed as quick fixes for glowing skin but these products are unregulated in the UK, with unknown ingredients, dosing, and formulation. They have Amazon.com : Sunless Tanning Drops to Drink, Natural Drinkable Tanning Drops, Oral Self tanning drops with Beta Carotene, Moisturizing Tanner for Face&Body, Enhancing Your Natural Skin Tone,For All Skin Types 50ml : Beauty Self Tanning Drops TAN LUXE