Even though the directions said to clean off the mask after 8 mins, I left it on throughout the night and did not experience any side effects at all. Skin was very moisturized and plumping the next day. The price can be a slight turn off, but I loved how much this did to my skin.
For a high-end skin care, I can't complain much abt the price. This mask is fab! It restores the moisture in my skin after just 1 application.