I used some sheet masks recently. I saved them to show you what the cotton vs hydrogel masks look like. These are dried out. When they come out of the package, they’re soaked in mask solution so they feel wet.

These are both 2-pieces. But many sheet masks come in 1-piece (a single sheet). The 2-piece is supposed to give you a better fit, but honestly, it didn’t make any difference on me. Both kinds are way too big for me. (I hope they start coming out with smaller sizes in the future.)

Left mask (A’Pieu Dual Sheet Mask) is a paper mask. It is made of 100% cotton.

Right mask (Skin79 Snail Nutrition Hydro Gel Mask) is a gel mask. Unlike a paper sheet, the gel fits exactly to the contours of your face.

I like the hydrogel much better because the fit is more comfortable for me. But it feels a little bit clingy after 5 minutes. Probably not a good idea if you’re claustrophobic.