I really like this first treatment essence. It's more hydrating and glides more smoothly onto the face than Missha's newer version of the treatment essence (5X). My face feels silky, smoother and plumper after using it on a daily basis. But I haven't noticed any brightening or anti-aging effect like when I used SK-II treatment essence which is way too expensive to buy on a daily basis. Even though this treatment essence doesn't replicate all the ingredients in SK-II, I think it is a good, more affordable alternative so I would highly recommend it (it's better than the newer version) and would repurchase it.