I have come to the conclusion that I have pre-maturely ruined my skin do to the sun sensitivity affect of retinoids. I have used retinoids on and off for 3 years now to help with acne, and was liking the results but then I started to notice my skin becoming less firm and older looking after a while, so I stopped. I wore sunscreen religiously at all times, but I just remembered that I never reapplied it or wore heavy duty sunscreen while playing sports in the hot sun for hours (imagine all that damage), and now at 20, I am hating my skin, looks terrible for my age; I have seen 50 year olds with better skin than mine. I started looking online for a solution, and all places led to retinoids. So I am thinking of using them again, but this time being more cautious when out in the sun, because I am out a lot (can't give up sports). Anyways does anybody think its wise to go back to retinoids to fix my skin, or will I just risk damaging it more? Also is there anyone that could recommend a really powerful sunscreen that is sweat proof, safe, and doesn't make me look like a white ghost all the time I go out? Thanks in advance.