COSRXPure Sodium Hyaluronic Acid 3% Serum, Hydration & Moisture Boosting Facial Serum for Fine Lines & Wrinkles, Plump & Repair Dry Skin, 0.67fl.oz/20ml, No Artificial Fragrance, Korean Skin Care

I've purchased several products form Cosrx and this is one of my favorites. I use it every night and it has made my skin look great. I will continue to reorder as this is now a staple in my skincare routine.

This works well for me. Leaves my skin soft and young looking

All cosrx skincare are AMAZING!

Soy de piel seca y pensé que este producto me ayudaría, no se si lo estoy usando mal pero he tratado de seguir las instrucciones que trae e incluso he visto videos para saber si lo estoy haciendo bien pero aun así cada vez que lo uso aparece acné en mi cara a pesar de nunca haber sufrido de acné. Así que deje de usarlo xq tal vez no es un buen producto para mi.

First you must know this isn't a full ounce but .67 ounces - they could do better with making sure that is front and center so customers know the amount. I am a little disappointed in COSRX for not being completely transparent about that. I really had to search to find the amount. I adore COXRX skincare as my skin absolutely loves it, but this is where they drop the ball. That out of the way ---The serum is beautiful. It's medium thick clear. Glides on my skin so smoothly. Very hydrating. I pair this with the COSRX snail mucin - it took me a long time to order snail mucin as it is a little gross and I make sure to avoid my lips (ew), but the two together calm down my rosacea redness--I have Type 1, which is redness and flushing - stinging if my barrier is compromised.This has Sodium Hyaluronate, which is the better hyaluronate as far as it has a smaller 'molecule size' so it can penetrate better--at least this is what I understand.The fourth ingredient is glycerin, which is very hydrating, and adds a lot to the formulation.I put this on damp skin, and whether I use the snail mucin first, second, or not at all, after applying on damp skin I dampen a makeup sponge or use damp fingers to pat and press more moisture into my skin. I let that 'sink in' for a while - 3-5 minutes or sometimes longer before going on with my skincare.Sometimes my cheeks will be red and this along with the mucin will immediately calm it down - well, immediately as in about 30 seconds or so after applying. Even the act of applying skincare can make my cheeks turn red.I love that COSRX is not expensive at all - even at less than an ounce, it's still a bargain. This along with Beauty of Joseon are my two favorite K-Beauty brands and I don't use much of anything else anymore.

It works so well! But it's so small! And it's So Expensive! Love this! I love all cosrx products. No scent, great on the skin, no irritation (for myself) cute little bottle- to expensive. When it said the weight at one point, I thought it was the weight of the product NOT the weight of the jar & product.

Works very wellFace is softer

I really wanted to love this product. There was hardly any serum in the bottle when I received it and I’ve only used a very small amount once daily for a total of 5-6 days. I’ve gently rotated the bottle and tilted it to see how much I could draw up and unfortunately it’s less than a dropper full. I don’t recommend this and won’t be purchasing again.