Retin A (Tretinoin) is derived vitamin a, mostly used to treat acne but is also used to treat sun damage and wrinkles. It works by speeding up cell turnover and rapidly exfoliating the skin.
This is probably hands down the best product I have ever tried. Although there are some debates due to the side effects. But I simply can't live without this cream and use it religiously every single night. I have been using this for 3 months now and I have seen a huge difference in my skin.
I purchased this at my local pharmacy and have this in 0.5%. I mostly use this to treat my acne which is a big pain in my life. This hasn't stopped my acne completely but it has greatly helped. I am also using this as a preventative anti ageing measure.
Now this works differently on everybody and you won't see results immediately and for most people it has to get worse before it gets better and thats why most people quit at the beginning. The common side effects are irritation, dryness, peeling, redness and burning. I had all of these for a good month but I was determined to stick through it and have never looked back since. Now my skin is very smooth my skin tone is more even and I have fewer breakouts.