I left the mask on for about 20-25 minutes, during which time I felt a pleasant, cooling sensation. After removing it, I gently patted the remaining essence into my skin, as recommended.My skin feels soft and refreshed after using them. This is my second time purchasing.  The results were immediate and impressive. My skin looked noticeably brighter, felt plump and hydrated, and my pores appeared smaller. The redness around my nose was visibly reduced, which is something I struggle with.