I used to just got to Watsons or Cosmed for Retin-A. Now I can’t find it there :bluemad: Do I need a perscription now like in the states? My skin is sad 
You can find it at any chemist. .025% (I heard they listed the strong stuff)
There is a store in the Ku-ting area that has it, I saw it there about a month ago. At the Ku-Ting MRT get off at the shi-da exit, this is the Star Bucks exit, right as you get out of the MRT there is a drug store to your left. The Retin A is on the bottom shelf of one of the rows.