A combination of stress and using a product that didn't agree with my skin left me with bouts of acne id never experienced before that weren't healing for months but this stuff helped reduce and repair it within a couple of days after switching to it. With hyper sensitive skin, I had a lot of trouble finding a product that was both effective yet nonirritating so I'm really grateful to have found this one + the day serum. They really have transformed my skin and quickly reduce and repair any new blemishes (I usually get one after being on a plane or touching my face - like i said my skin is pretty sensitive). I don't normally write reviews but this stuff really helped me and if i do get a blemish or something they don't last more than a couple nights of using this. <3