I don't really know much about skincare but I know I love using my ecdysis mandelic acid, for a girl with sensitive skin that can just wakeup with a face full of acne, the nights I use my mandelic acid is always different, it calms my skin down, I don't know it is just soo good☺️ I started using the uneven skin duo just recently and I'm so impressed, my body is no longer lighter than my face, my hyperpigmentation is reducing alot, It is very kind to my skin, no more comments about why I'm getting darker, I'm happy tbh. 10/10