I've personally used some products like the nightime acne treatment, glyco peel, and the lip plumper--all of which I strongly recommend. However when it comes to the hero product, or her regenerating serum, it really didn't work with my skin type (combo, sensitive, and I'm only 20...so I prolly shouldn't have really used it anyways). If you're allergic to retnoids, you might want to stay away from some of the line. However, I've known so many people who have used this stuff and they literally look 10 years youngers; lines have really disappeared from their faces. The line is kind of like any other dermatological line out there, it either works for you or it doesn't.