I've been using Tretinoin 1 % for 1 month, used 0.5% for 1 month and the lowest 0.25% for 1 month. I've seen zero results (I know it may be too soon) but my sunspots are DARKER and it goes back and forth. I use a good sunscreen religiously and protect my skin from UV rays EVERY day. My esthetician is telling me my skin is too sensitive to the sunlight even though I'm using the sunscreen and she is telling me I need to stop using the tretinoin during the Summer. Help!