i have been using this product for a month, i use to use it a lot in 2019 but stopped. i have acne scars again so i went back to using it. After a month you start to see the results. Don't expect it to work over night and be disappointed, this is something that works overtime to fade acne scars. Its actually hydrating and fragrance-free so its so easy to add it to a routine, i don't see it interfering with any products in someone routine. I use it after toner.