I’ve used retinol products before,After only a couple of uses, I could tell that this product was strong compared to the other brand. In fact, almost immediately after using it, I my skin experienced more dryness and dehydration than I was used to. My skin felt tight and rough, and I started to see subtle flakiness appear. It usually only lasts a few weeks before the skin adapts and these symptoms go away.And after another two weeks, the results were even better. I only use it nightly. My hyperpigmentation faded and my skin looked brighter and clearer overall. it does not have much of a fragrance.