It says in the description of this website:

A highly nourishing mask sheet containing kelp extract to help regain skin softness and youthful impression.

The air pockets within the sheet contain a handful of nutritional essence, providing natural moisture and nourishment to skin.

It is nourishing. More than feeling my face softer I felt it brighter and refreshed.

I kept the remaining essence of the mask as a cream, again refreshing and moisturizing.

Will buy this again.