I have sensitive skin when it comes to retinoids. First i bought the smaller version but it didn't cause any irritation so i invested into the bigger bottle. It does a good job on the fine lines.

I use it for years now and it stays in my night-time routine. As for her sister, the vitamin C serum for the daytime.

The best retinol I used in my life, my skin is without sights of age 

I’ve tried retinol from other brands and also the oil version of this one too, non of them I was super happy with. This one has the best ingredient combination for my sensitive oily skin. Does not aggrevate or dehydrate, but feels like a gentle, though very effective retinol that I can use on a daily basis. This is my 3rd bottle and will keep repurchasing. 

This product is a great starter retinol. It's gentle and does not cause irritation. As far as the results go: I am in my forties, and have been blesses with very good skin. I hardly have any lines or wrinkles, so I can't speak to that part. But I do notice my skin is much more even and has better and smoother texture.