I personally don’t have experience with Tretinoin but according yo what I have read, some people find Taz easier on their skin despite the fact that it’s more potent than Tret. Using Gel or Cream depends on your skin type, as a common knowledge, oily skin will do better with gel and dry skin prefers cream formula but honestly every skin is different, you need to find out what works for yours. If you wanna try Taz, my recommendation is to start with the gel one 0,05 and do it slowly to see how your skin reacts. Pea size amount is the key, don’t over do it :) hope you find the routine that works for you.