Hi everyone

I am new to the group. ijust got the book this week and it was so useful. I am 40 y. And having senistive skin
lately I have been reading about retin A . I do not have acne but I heard it reduces wrinkles and I have wrinkles under my eye when I smile. So does anyone used it and helped w the wrinkles. Also does anyone know if it has any side effects. I woulg greatly appreciate any feedback