Works great for first cycle at the very east. I got a bit of freckles on later cycles. Some people do, some don't have any problem. Most people have problems I think cuz they think they're invincible to the sun once they start using and get way too much unprotected UV exposure -- both Melanotans make you far more resistent to sunburn. I've used from Allen, Kakarot, and Muscle-Research -- all worked really well. But it does get annoying sub-q injecting every couple days, at least IMO. And both Melanotan 2 and 1 will tan you the same, just mt 2 will give you super boners too, and I do mean super.