I have been using this about 10years. This doesn’t irritate my sensitive skin at all. It is about $5 for a box with 5 sheets with 100% cotton. I don’t think it actually works for making skin white as it clams on the box, but it does calm my skin and my pore goes away for a while. It said that it contains vitamin C and collagen. Honestly, there are a lot of better products out there, but for me, this is cheap for daily uses, not irritate my skin and I could get anywhere in Japan. So I will keep using it.