MT-2 nasal spray tanners aka Melanotan 2 or more recently the nasal tanner is a peptide that acts upon your body’s production level of melanin essentially ramping up your own levels of the skin protecting compound giving you a golden color as well as giving you higher protection from burning and the negative effects of UV from the sun.
Reference:
https://nasaltanners.com/2021/01/25/mt-2-melanotan-2-big-uk-europe-rush-blog/ 
