Snail extract is hugely popular in South Korea, and there's a reason why: it's believed to stimulate the formation of collagen and elastin. That's why this sheet mask by Master Lab, one of South Korea's most popular brands, is such a hit. It's sold individually for a very low price of 2000 won (approx. $1.76 at the moment of featuring it on Grabr). Get a whole package of five masks for just $9.