This brand seems to have gone viral. During the week of Thanksgiving, I bought this and a few other cosrx products. This actually works! Use it directed; once daily after use of snail mucin (or your favorite moisturizer)
I used it for about a week and a half and noticed a more smooth and bright looking completion. I'm 42 and tan in a bed often. I like my skin to have color but that's not to say years of sunbathing and my current profession as a heavy equipment operator, don't come without side effects.
This was a wonderful alternative to a microderabraision treatment I tend to get to embrace the same qualities.
This product seems to be moisturising and is not scented.
Use it at night only. I found trying to ramp up per directions and eventually use it daily, wasn't making my face happy. I got results using it every other Dat so I did that until I got where I wanted. I saved the rest and use the snail mucin daily. See my review for that as it's a great product too.

I've ordered the retinol twice now and I love it! I wash my face, do my under eye gels until they dry, use the retinol, then the power essence, then the moisturizer, letting each one dry and soak in before using the next. I love this concoction. You'll have to order the retinol more often than the others, and obviously it's going to be a little more expensive, but it's totally worth it, and definitely on the cheaper side compared to other brands. It's lightweight and sits well under makeup, hydrating, the texture is smooth, never lumpy, and I definitely feel like I glow after my routine. Great products at a great price!

Cosrx products are amazing!! I stand behind them 100%. I use them daily! My skin glows!