Tretinoin
"I'm 52, sought help from a dermatologist for under skin bumps, blackheads and oily skin.  I've been using this product for a few months now and in the beginning, as stated in other posts, I experienced dry, irritable skin but in the past few weeks, I've noticed a noticeable change.  My skin is radiant, even tone and the bumps are practically all gone.  I use coconut oil as a night moisturiser and this cream daily.  I also use a sunscreen. I have been getting very positive comments on the youthfulness of my skin.  :)"