I go to my dermatologist in 2 weeks. I have been using Tretinoin Cream (.05% Obagi) on my face to improve overall skin quality - texture, very fine lines, minor discolorations (along with Obagi Blender - only on the dark spots/areas). I have had irritation only once. After 3rd night of use, I had very slight flaking and redness around my mouth and nose. I skipped the next night and have been fine ever since. I think I need something stronger -- but am confused about the creams, gels, and different strengths. I like to be informed -- Help! Thanks.