Differin Gel is great prduct to get tretinoin-like results without the hefty pricetag. While this is only 0.1% Adapalene, it smooths the skin well. It's really made for acne prone skin, but I use it for antiaging effects. Face, neck and chest. (Don't just follow my lead, that might be too intense for you! Everyone is different.) Adapalene is synthetic tretinoin, and very stable, which means you can choose to wear it day or night. I choose nighttime. This strength of adapalene is OTC, which is great. I hope some day the 0.3% is OTC, because that shows the same benefits as regular tretinoin. But, until then, I will use this Differin gel. It's a bargain, and my skin looks like glass!