(R.S.G) Great retinol
Going back to retinol after breastfeeding

(R.S.G) The Retinol is good
This product applies well and is not harsh on the skin. I'm sure it improves my complextion... I will see how it goed within a few more days. There is not harsh odour or stickiness. Overall it is a good product.

Good
I bought this product when it came out for only $5 from brand

(R.S.G) Great retinol product for sensitive skin
I have super sensitive skin but also really really want to try a good retinol product to help with like everything. Brightness, anti wrinkles, hyperpigmentation, pore care, you name it retinol does it. Since this is a 0.5 retinol product, CosRx has done a great job formulating it with squalane and vitamin 5. It's quite gentle (mind you I really buffer and has been using it only once a week to start after my moisturizer). I would recommend for those who had experience with beginner retinol and want to progressively increase the strength but worry about irritation.

(R.S.G) Love this!
Works very well. If you need to narrow it down to only one serum, this is it. Works really well.