I have sensitive and reactive skin - so if something is bothering my skin, I'll know immediately. I bought the sponge thinking that if it is too rough for my face I can use it for my neck and shoulders. Fear not! It is so gentle and soft that I cannot imagine my life before it! :)
I use it in the second stage of my double cleansing - so not to remove makeup, but to cleanse the skin and treat it a bit. I bought the pink one - Not sure if the others are so different from it. I might try the red clay one or the baby one next time.