"i wanted to share my experience using retin a as mine was very positive. when i was 30 i was so tired of my adult acne that i&#039;ve had since my teens so i have had acne for years. i was so sick of feeling bad about my skin so i ordered some retin a in the gel form 0.5% and yes, i purged but that didn&#039;t last long. all the red spots and brown spots from sun damage had done a number on my skin. finally after the second week i could see a true difference. i stuck with using this religiously for 2 years until i could handle my skin alone with peels and aha&#039;s. now at 37 i have gone back to it for spot treatment of some pimples i get mostly hormonal but now i use it more to keep my skin looking young. its worth it if you stick with it."