I just received a cpl days ago. I washed my face, used toner and the Medicube Exosome Shot Serum first. I read some reviews that said they were hard to apply? All u do is gently peal the backing off each individual piece of mask ( comes in a top half and bottom half) and apply it to ur face. U may need to do a little snipping if it doesn't fit ur face size exactly. Mine fit fine. After applying I immediately laid down. It does tend to slide a little when u first put it on. That's cuz it's loaded with Collagen serum. Apply the top half first, then the bottom. I put the box of masks in my refrigerator to keep them nice and cold..it's 117° where I live. It definitely added to the wonderful feeling already given by these masks. I bought them on Prime Day and got the box of 4 for $12.25 compared to now $19..I will definitely be reordering these masks. I slept in the mask overnight and when I woke up I just peeled it off and my skin was glowing..I truly recommend these for anyone that wants plump, hydrated, younger looking skin. This is after only 1 application. I always give my honest review. Why make someone else waste their money on a nonsense product. Oh, and they were from Korea as stated on the website and not China.