COSRX 6 Peptide Collagen Serum Face Toner with Niacinamide & Hyaluronic Acid, Hydrating & Firming Korean Essence, Anti-Wrinkle & Pore-Tightening Serum For Plump & Even Skin Tone, Korean Skincare 150ml

I hesitated before buying this because of the large size and the fact that it’s Korean skincare — which can feel very different from Western products. But I’m glad I tried it! This serum (or essence, it feels somewhere in between) is quite watery in texture, but not runny like water. It spreads easily and you only need a small amount, so the big bottle will last a long time. However — and this is key — it takes time to absorb. I usually wait 5 to 10 minutes before applying anything on top, otherwise the next layer (like cream) just slides off and the skin doesn’t feel as smooth. But if you wait, the results are absolutely worth it. My skin feels incredibly soft — almost baby-skin level. It hydrates deeply, brightens the tone, and improves texture. It even seems to have a mild evening/brightening effect. No irritation at all on my very sensitive skin. I checked the ingredients on the Yuka app and it scored 100/100 — no harmful or problematic components. There’s no noticeable scent, which I appreciate. The formula may contain some synthetics, but nothing that caused any reactions for me. In short: great value, amazing results, just give it time to do its job. I’m very likely to repurchase once I finish this bottle.

It feels silky on the skin and layers well with other products. The peptides and niacinamide make my skin look more even and refreshed. A solid everyday serum.

This serum is fantastic! It’s packed with beneficial ingredients like collagen, peptides, hyaluronic acid, amino acids, and NAG, all of which make it feel like a complete skincare boost in one bottle. The texture is lightweight and absorbs quickly without leaving any sticky residue. It’s easy to layer under other products, and I love that it combines so many active ingredients in one formula. I'd recommend this serum to anyone looking to improve skin hydration, firmness, and overall radiance.

Absolutely brilliant, I put a face mask on and put some of the COSRX in a spray bottle for even coverage, and used my Medicube Medicube Age-r LED Booster Pro to let the product get deep into the skin.. The glow is unbelievable.. skin feels super moisturised.. then finish with nip fab night oil.. super pamper night..

Absolutely love this as a first layer serum, it contains HA so you can skip that and go straight for this, full of skin loving peptides, so light on the skin, large bottle but lasts absolutely ages, absorbs very fast due to it being watery but this is good as you can then layer thicker serums on top. I’ve spent a fortune on skincare products now I’m 49 and really need to look after my skin now. When you are young a good moisturiser is all that’s needed and possibly this as a first step but as you get older your skin needs more attention and this product ticks all the right boxes. It’s expensive but lasts a long time so if you break it down it’s great value for money. I would love if they added matraxyl into this serum/toner as I’m having to use a separate serum for that afterwards. I’m going to start pairing this with snail mucin and see if it makes a difference but been using a good while now and I can definitely see results, my skin is hydrated and more even tone and looking plumper. With skincare try just adding one new product at a time so you can see the real results. That’s what I did with this product and the results are amazing and worth every penny. Don’t be put off by the watery consistency it just means it absorbs faster. You also don’t need a lot 2 pumps is more than enough (sometimes we see a big bottle and think we need to use a lot but really you don’t. I’ve been using a good while now and there’s still loads left!!! Definitely recommend especially for mature skin. I have sensitive skin and have had no issues whatsoever. It’s one of my go to products now.

COSRX The 6 Peptide Skin Booster Serum is a lightweight, fast-absorbing serum with 6 peptides, niacinamide, and hyaluronic acid. It deeply hydrates, smooths the skin, and improves overall texture without feeling sticky or heavy. With regular use, skin looks more plump, fresh, and healthy, with a subtle anti-aging effect over time. Great for layering under moisturizer or makeup and suitable for most skin types.

Love this as part of skincare routine. Deeply hydrates. I put it on as my second step after rice water. I noticed a big difference in my skin when I tried another so would not be without it now

Been using this now for a month and have seen no improvement on my skin. Maybe this will work on younger skin (I am 50) and prevent wrinkles and sagging. I can buy much cheaper products and get the same results.