The sheet felt like silicone. I must have used the wrong amount of pressure, because I ended up tearing it in a few places, especially around my eyes, when applying it. I bought it for the entertainment value of the color-changing feature. The instructions said to apply it until it became transparent, but the color didn't change, so I peeled it off after about 15 minutes. I've heard that leaving it on for too long isn't good. It has a strong adhesiveness like silicone, but it feels more liquid-like and not very watery, so my skin felt a little tight after peeling it off. However, my skin felt soft the next morning, so it seems to be quite effective. The cost-effectiveness isn't great, and it's difficult to apply, so I won't be buying it again, but it wasn't bad.