numbuzin No.4 Serum | Collagen 73% Pudding Serum | for Wrinkles, Aging, Loose Skin, Ultra-Low Molecular Collagen, Elastin, Hyaluronic Acid, Niacinamide | 1.69 fl. oz.

Great product. I use it under my sunscreen. My skin feels well hydrated and soft and fine lines almost not visible. Highly recommend it.

I am a huge Numbuzin fan. I have a lot of their products. This face serum is my absolute favorite. It is thick but dries and leaves my skin feeling hydrated. I use it in the 5 to 7 step AM or PM riual with other Numbuzin products. If I could bath my whole body in this stuff, I would.

Love love love. Thick serum. Immediately your skin feels bouncier and softer

I am a 53yr old female with some fine lines and wrinkles, normal/dry skin, light/medium tone that drinks in extra hydration. I am not overly sensitive to products so I can try just about anything. I cannot say that I am exactly an every day self care kind of girl, but I do my best to stay regular with hydrating and treating my face with some attention and love. I am blessed with (so far) gently maturing skin.I wanted to try the Korean skincare and see what it is all about so I ordered this product and several COSRX products, that I have married together.1) The bottle is so darn cute. It is glass and heavy, which I appreciate. The pump works well, right side up or upside down, and the product is nice and thick. I really like that.2) There isn’t a smell to it, which I also really like. My sense of smell seems to have gotten more sensitive, so finding products that are not doused with aroma is a priority for me.3) It really is lovely on. I use it after my other concoctions as a final step, before sunscreen. It plays well with whatever I put on each day. I LOVE that.Thick and moisturizing, it blends very easily. I use 3-4 pumps and pat it in as the directions said to do.4) The hydration really does last all day. It doesn’t necessarily keep your skin looking like glass skin, but I can tell hours later that I applied it. It hydrates and I love that. I was not sure how it would do in the summer, but I have not had any issues.5) I really like that if I get it in my eyes, it does not irritate them. Sometimes when I layer products, especially now in the heat, they can move around when I sweat and can end up in my eyes. There is none of that with this. Once it is absorbed, as I said, it plays well with any other products and does slide around. It actually gets absorbed.My final opinion: I understand the hype.I will re-purchase once I use this one up. I can see myself trying different products but ultimately using this as my final step, prior to sunscreen.I gave this 4/5 stars only because I wish they had it in a bigger size, too.

I love this Numbuzin collagen serum . It feels amazing on your skin and gives you a nice Dewey glow. Overtime I haven’t noticed any difference in my skin, but it does feel amazing.

This goes on well and it doesn’t leave a heavy feeling but the skin feels soft

O love in my skin

Wasn’t all the that they raved. Used the entire bottle and didn’t see a difference in my skin glow that they bragged about.