I used all the products everyday twice a day for the first week to regulate my skin and bring it to a good baseline. Now I do it once a day - skin feels even and good. Not many changes on the sun damage but again this is not targeted at that. Skin is much less drier and feels hydrated and soft. Smell and fragrance is very personal and subjective but the overall smell of all the products on my skin is very pleasing. Didn’t notice any side effects but then my skin has been pretty tolerant in general.