Review title is Recommended Shelf Life is Skeptical [SEP] Mizon is one of those K-beauty brands that I've had pleasant experiences with in the past. I love all their snail products, but this serum is no different. All you need to do is use the included dropper and lather on your face. It's not too thick at all and absorbs really fast. After using the product I've noticed my skin feeling less dry and having more bounce than it use to. I generally have a combination skin type and usually on the drier side during winters. The container said it's recommended use is 3 months after opening because of the ingredients (IT SAYS IT MUST BE REFRIGRATED after opening), so make sure you follow that for best results.