COSRXRetinol 0.5 Oil, Anti-aging Serum with 0.5% Retinoid Treatment for Face, Reduce Wrinkles, Fine Lines, & Signs of Aging, Gentle Skincare for Day & Night, Not Tested on Animals, Korean Skincare

I’ve been using this for a couple weeks and I’m already noticing a difference. My skin feels smoother, more firm, and just overall healthier. It’s not too harsh, especially for a 0.5% retinol, and I love that it has vitamin E and squalane to keep things balanced. Definitely part of my nighttime routine now.

This is a really nice, moisturizing retinol with the vitamin E oil it has in it and it doesn't sing at all.

A Korean friend with great skin recommended this to me. It has a high niacinamide content and is supposed to lighten dark spots, and I feel like my face is getting clearer. It’s fragrance-free and colorless, so it feels gentle. I’ll definitely keep using it.

Super moisturizing because it also contains squalene. It’s a great value for the money. I only use it at night because it is a bit oily. Within 5-7 it has absorbed. It comes in a dark glass bottle as well with a dropper which I love. I quality is amazing although I do wish they offered a stronger formula for those of us who is use to retinol. There is no smell which I love. Extremely easy to use. There’s not been a lot of peeling at all but it maybe because I need stronger. As far as results lasting results it has cleared my skin up within one week. It smooths moisturizes & plumps my skin nicely. Four stars because I need a stronger formula PLEASE COSRX

I love this retinol serum however be aware it's concentration is higher than others so a little goes a long way. I never had any skin irritation or any issues when applying it in my regular skincare routine. However it's advised not to use retinol every day or when scrubbing your face. It's very lightweight and your skin is able to absorb it nicely so it won't leave your face oily. I noticed that if you don't keep it in the fridge that the color of the serum may change to a darker color due to oxidation so best to keep it in a regular fridge.

Its good and effective

Works good, and fine lines go away after use, but...I hate the oily ness of it, I thought i wouldn't mind, but I do, unfortunately. But if you don't mind oilyness then thats fine. Doesn't make skin irritated either, but thats because I've been using a lower level retinol for a while, DON'T USE THIS IF YOU ARE STARTING OUT WITH RETINOL!!! Use the lower percentage ones. Trust.

Cosrx is my go to brand for skin care and this retinol serum does not disappoint. I put this on at night before bed and I swear I wake up with firm, smooth skin. Love it.