The Retinol 0.5 Oil, 0.67 fl oz (20 ml)

I have been using the serum for a month now. My skin tone and texture has improved noticeably. My skin is combination and prone to rashes especially before the cycle starts, I don't know if the serum worked, but this time there were far fewer rashes. Reduced the number of procured pores, overall my face looks fresher and more rested. I definitely have noticeable effect on my face after using this serum! The packaging with a convenient pipette dispenser with a stopper, which easily allows you to use the product sparingly. Literally two drops are enough for the whole face and neck. The serum itself is oily in texture, but it is quickly absorbed by the skin without leaving a sticky feeling.

A bit strange texture - it’s an oil - but you get used to it. There is a slight stinging sensation, but bearable. Does the job, I like the packaging and the size is quite large.

a nice size and I used this everyday. I like this brand very much.

I don't use it often as I have other products that I use, but it goes on light and feels really good on my skin. I like hat it does not make me break out! Skin looks great the morning after.

No scent really. I use this a lot of days, not every single day but probably every other. Most retinols can be drying but this one serves its purpose beautifully and is not drying. Was gentle enough on my pretty sensitive skin, so i definitely would recommend. Composition is good, definitely would help with aging prevention - however i use for acne and it helps with that too in my experience:)

I wanted a product that felt dependable, and this one really delivers. The formula is straightforward and clean, which gives me confidence every time I use it. The packaging is simple but functional, and the amount inside lasts longer than I expected. What I love most is how seamlessly it fits into my routine — no side effects, no discomfort, just steady results. Over time, I’ve noticed improvements that feel natural and sustainable. Definitely something I’ll continue to keep in my daily regimen.

This product is so amazing and I highly recommend it for anyone who has sensitive skin. I absolutely love this. It gives me the results I’m looking for and it also smells so good and feels good too. The texture is just perfect and so refreshing. This product is so amazing and I highly recommend it for anyone who has sensitive skin. I absolutely love this. It gives me the results I’m looking for and it also smells so good and feels good too. The texture is just perfect and so refreshing. Also it smells amazing I’m just amazed with it..

I’ve been using this product for some time and I’m really impressed with the results. The texture, scent, and absorption are all excellent — it feels high-quality and delivers what it promises. I noticed visible improvement in my skin’s smoothness and overall tone. It’s effective without being harsh, and a little goes a long way. I also appreciate that it’s easy to apply and leaves no sticky feeling. Definitely one of the better products I’ve tried from iHerb, and I would repurchase it again. Highly recommended!

A simple oil to add to your skincare routine. I haven't experienced any irritation from the retinol. It says to limit it to three times a week when first starting it. Then to gradually increase to every other night which is what I am doing now. It is unscented, just a clear oil. The ingredients say the oils are squalane, vitamin E, and palm.

I’ve been trying the COSRX Retinol Serum and I’m really impressed so far. The texture feels smooth and absorbs well without being too heavy or greasy. It’s gentle compared to other retinols I’ve tried, but still feels effective. I haven’t seen dramatic results yet since it takes time, but my skin is already starting to feel smoother and more refined. Packaging was secure and easy to use. Excited to continue and see the long-term benefits!