Here are a few more top picks from Amazon. Elvira Bio-Collagen Real Deep Mask (4-Pack) Leave on for 3-4 hours. Dianzan Bio-Collagen Real Deep Mask (4-Pack) The mask hydrates the face in 20-40 ...

Here are a few more top picks from Amazon. The mask hydrates the face in 20-40 minutes, deeply nourishes in three hours or can be worn all night to lock in moisture and achieve firm, glass-like skin.