What to use instead of Retin-A in a 21/d sunny trip after 1/m using RetinA to prevent acne? I have been using a mixture of RetinA and Eldoquin for 1 month with little improvment. And i will go in a trip for 21 days which i will be exposed to sun a lot. Can i just to stop using the medication? or my skin will get worse? Is there an alternitave way to prevent acne from appearing?