I've purchased this multiple times because it works. I would've given 5 stars but because the bottle is so small, I feel like for the price, it could be a little bigger. I have acne prone skin, but keep it at bay, by using a high dose prescription strength tretinoin. This serum is so light I will use it under the tretinoin if I feel my skin is particularly  red or sensitive. I also like to use it with a korean ceramide moisturizer for even more hydration. I don't use it unless my skin feels dry or tight or flaky. It doesn't cause breakouts and it hasn't clogged my skin yet. I don't use the 3 drops the bottle says, because the bottle is so small. I would recommend this 100 times over. I even have it on the subscription service. 

This is my go to product and serum every time my skin rashes flare up. I have super sensitive skin which makes it very difficult for me to find a suitable skin product. I find that it is easy to apply and is quickly absorbed by my skin. It also doesnt make my skin oily! Very good product!

My skin is super sensitive, and I live in Texas, where it's hot ALL THE TIME and fluctuates between super humid and super dry. This is really not ideal for my very sensitive, acne-prone, combination skin, but ever since I've started using this product as a part of my daily dose, my skin has been AMAZING! It really help create a protective barrier so my skin is less reactive to my environment. I use it with the B3 serum and the French pine bark to get smooth, clear, soft skin!

So in love with this small bottle of serum!!! This really made my skin barrier stronger and I experience less breakout now! This is my holy grail!!

I always had combi skin but it recently became drier, so I started using this serum and it has really improved the condition of my skin. I love it! (:

This product is gentle to the skin and is non-oily when applied. Its really great because I tend to get breakouts before my period but after trying it, my skin became smoother and I am not getting any breakouts this time! Also, my face gets oily after half a day at work. With this product, my face is less oily and I do not need to touch up anymore during lunch time. Its a pleasant surprise. Will definitely recommend this product to those with sensitive skin and in need of hydration.

This serum is amazing! It soothes my easily irritated skin and my skin is less red after use!! I cannot leave without it

Love this product, silly me for some reason I just looked at the picture on the website and the product looked a decent size. When I opened the packaged, oh boy what a shock

This serum was a lot more hydrating than I was expecting it to be. It made my skin feel soft without any greasy residue or stickiness. It seems to work well with most moisturizers and SPFs. Would definitely get again.

It's really the best ceramide serum you can find on the beauty market. Instant gratification. The only drawback is the price. The bottle is super small, doesn't last long at all (not even a month), but it does repairs your skin faster than any other products I have tried so far