As the name states, it is a deep cleansing black mask that also aims to brighten your skin. I personally don't go for gimmicky sheet masks but this was definitely a change of my routine. There is indeed a bubbling effect from the sheet mask, which is quite entertaining. As for its benefits, I only saw the moisturizing benefit. I always cleanse my face before applying any sheet masks so I guess I "double" cleansed when I used this. For the brightening effect, I believe you would need to do several times to see it from the mask. I only tried it once so I can't tell for sure. Will I purchase this myself? Probably not. There are better deep cleansing masks out there in my honest opinion.