コスアールエックス レチノール0.5オイル（20mL）

I have tried so many retinol products (as well as other anti-aging and skin smoothing products) and this is the best overall. I have age 50+ mature, dry, sensitive skin. A lot of retinol products end up burning my eyes or flaking my skin, they have a weird texture, smell bad, or just don’t work. This is like liquid gold. It’s in oil form. I put it on about an hour before I go to bed so it has a chance to absorb. I eliminated all other serums at night. Now I just use this after I cleanse my face. It’s all I need. My sagging chin has lifted and my skin is much more even and smooth. I didn’t have a lot of wrinkles for my age, but it’s smoothed the crow’s feet around my eyes. I’m on my 3rd bottle. I saw a difference after only about a few weeks. It’s amazing stuff!

Great product hydrates skin not too greasy, perfect

It’s a fantastic product. Compared to other retinols on the market, this has only one questionable ingredient that has the potential to be an endocrine disruptor, but more science research is needed on the matter.This is meant to be the last step in your skincare routine without a moisturizer. I tried three different moisturizers after applying this retinol, but they all pilled. I use the retinol oil as my last step, and my skin feels hydrated, so there was no need for me to apply a moisturizer afterwards.I love that this retinol is powerful but also gentle on my skin. I experienced drying the first time I used this, but I also used it three days in a row. I learned afterward that you need to start slow, and eventually my skin barrier worked itself out. I apply this a few hours before bed so it has time to absorb into my skin. I also apply the COSRX Snail Mucin 96 essence before hand.If you have never used retinol, I would suggest starting with their 0.1% cream and slowly building yourself up to this product.I didn’t experience any skin purging like others have. To avoid or lessen skin purging, I’d recommend using a gentle BHA/AHA cleanser the morning before and after your retinol treatment. Adding this simple step cleared up my skin when I first started using retinol. It expedited the purging process.

This serum works wonders! My skin feels smoother and more radiant every day. Perfect strength for retinol without harshness. I’ll keep repurchasing!

My 80yr old mother swears by this! She looks to be about 60 because of retinol and good skin care. She 💯 believes this skin care line is legit and improves wrinkles, skin discoloration and many other skin problems. You must start small and build up over time though.

I've been using this COSRX retinol for about a year now. I love this product. I get compliments on my skin regularly. At a dinner party the other night and someone I didn't know thought I was her age or younger. Nope! It turns out I was 8 years older then she was, much to her surprise.This product has to be refrigerated after opening. It is very thin (not a negative), so I apply it after washing my face and applying the COSRX Peptide Booster. So third step in face process at night. It absorbs quickly and I like that about it as well. I have some retinols that are thicker (for travel, shelf stable) and they take too long to absorb compared to this one. The strength is high so I have found it to be very effective. There is no scent to it and I've had 0 skin reaction issues with this product.I think it has been great at keeping the fine lines at bay, so it is protecting my skins elasticity and helping to keep the moisture in my skin. I will continue to use this product. I always make sure I have an extra one in the frig, so I never run out.I think the price for this product is really good. I have recommended it to several friends and family members who were paying for a high end brand and spending $150.00 for retinol. They no longer use the high priced product and love this one as well. I'm a believer in this product and the COSRX brand. It has yet to disappoint.Pro TiP: if you are new to using a Retinol, I recommend starting out using it every other night and build up to daily. If you have issues, back off how often until you get to the daily stage. It is so worth the effort!