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COSRX Niacinamide 15% Peptide Booster Set is a Korean skincare duo featuring a high-strength 15% niacinamide serum paired with a peptide-rich toner. Designed to refine pores, reduce redness, control oil, and improve skin elasticity, this dermatologist-tested, hypoallergenic set delivers visible smoothing, radiance, and fine line reduction for all skin types.


















































| ASIN | B0D66RLZHZ |
| Active Ingredients | Peptide, Niacinamide, Adenosine, hyaluronic_acid, peptides |
| Best Sellers Rank | #9,347 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #21 in Facial Skin Care Sets & Kits |
| Brand | COSRX |
| Brand Name | COSRX |
| Container Type | Bottle |
| Customer Reviews | 4.7 out of 5 stars 1,959 Reviews |
| Item Form | Serum |
| Item Volume | 1 Fluid Ounces |
| Item Weight | 0.36 Kilograms |
| Manufacturer | COSRX |
| Manufacturer Part Number | SE20TR25 |
| Material Features | Hypoallergenic, Dermatologist tested |
| Product Benefits | Smoothing, Pore Refinement, Redness Relief, Elasticity Improvement, Fine Line Reduction, Radiance Enhancement Product Benefits Smoothing, Pore Refinement, Redness Relief, Elasticity Improvement, Fine Line Reduction, Radiance Enhancement See more |
| Set Name | Niacinamide 15% Peptide Booster Set |
| Skin Type | All |
| Special Ingredients | Niacinamide |
| Target Use Body Part | Face |
| Unit Count | 1 Fluid Ounces |
A**R
Use this to have better looking skin
I saw an article on this product and decided to try it. I found that it really does help with keeping facial skin smooth and not dry. The vitamin C oil is amazing. It faded the darker spots on face dramatically. I’m so very impressed. I’ve made this purchase a few times now.
C**A
Wow! Really LOVE!
Okay, my skin barrier is horrid after having children and years of essentially stripping all of the oil off my face as a teen. I’m very dry and almost get a gritty feeling at times. This has pretty much cleared that up after just a few days of consistent use. I use these after my daily shower and cleanser. I’ve seen others raving about the snail mucin in the past and thought I’d try it. I’m glad I did. The only thing I regret is not trying this sooner. Seriously. The truly clean and glowy look you get after you’ve applied your peptides and snail mucin is worth this price all day. Great job on this bundle Amazon!
S**K
Transform Your Skin Naturally with COSRX Snail Mucin 96% Peptide Booster Set
I’ve been using the COSRX Snail Mucin 96% Peptide Booster Set daily since the beginning of 2023, and honestly, it’s been a game-changer for my skin. This set is now my only skincare routine, and I haven’t felt the need for anything else. Before I started using it, my skin struggled with acne and visible pores. After consistent use, I’ve noticed a dramatic improvement, my skin feels smoother, looks brighter, and has achieved that coveted “glass skin” glow. My acne is completely gone, except for occasional hormonal breakouts around my chin, which is very normal. The overall texture of my face has improved so much that pores are barely visible, leaving my skin soft, shiny, and healthy. What I love about this set is not just its effectiveness, but also its gentle, nourishing formula. The snail mucin works wonders for hydration and healing, making it suitable for sensitive or acne-prone skin. The peptides help restore elasticity and firmness over time. Alternative uses: I’ve even started using a few drops of the serum on dry areas like elbows and cuticles, and it keeps them moisturized and smooth. It’s truly versatile and feels like a small self-care ritual every day. If you’re looking for a natural, reliable, and results-driven Korean skincare set, this COSRX Snail Mucin Booster is worth trying. It’s perfect as a gift for women or anyone who wants healthy, radiant skin. Pros: • Daily hydration and nourishment • Improves skin texture and elasticity • Reduces acne and minimizes pores • Leaves a smooth, glassy glow • Gentle on sensitive skin Cons: • Might take a few weeks for visible results, so patience is key • Occasional hormonal acne may still appear I highly recommend this set for anyone seeking real, long-term skincare results without harsh chemicals. It’s more than just a serum, it’s a daily investment in healthy, happy skin.
S**T
I am very pleased with COSRX
So, I'm two weeks into using these products and I can see a visible difference and don't feel like a dried out old hag. No funky smell and great hydration. The peptide booster is like water and easy to apply just a small amount is needed. I am surprised as my expectations were low. I have purchased two other COSRX cream items and am very pleased. No smell or perfumes! Great products. Great absorption and results.
R**R
Wonderful skin care set!
I have been using this product for a week now and I can already tell the difference in the texture of my skin. So much more hydrated and plump. I finish my routine with the All in one Cream from COSRX as well. It’s feels like age reversing. Now I can’t live without them. I need to repeat this purchase before mine finishes.
L**O
Healthy and glowing
I tried this for several months before writing this. ⭐ 10/10 Recommend ⭐ I’ve been using the Peptide Booster for just over 2 months (already loved the Snail Mucin), and my skin has transformed. My naturally very oily skin is now more balanced—fewer breakouts and shine, thanks to consistency. My Routine: • AM: Cleanser → Peptides → Tinted SPF moisturizer • PM: Cleanser → Peptides → Alternate retinol/exfoliating serum → Squalane oil I go barefaced for work (makeup only weekends/special occasions), and I’m finally comfortable in my skin. My old teen acne scars still bother me, but overall it looks healthy and glowing. Results: Balanced oil production, fewer breakouts, compliments galore. Perfect for oily skin!
A**L
Ok product but smell is weird
Peptide serum was thinner than expected. Don’t think it will be like the snail mucin. It is light but soothing. The vitamin C serum is a little crazy, out of the bottle it smells like cat food/tuna tbh but when it rubs in it doesn’t smell like anything. It’s moisturizing & made my skin feel nice. Still not sure if I’ll repurchase.
R**E
Love this Bundle!
First of all, I absolutely Love Cosrx! It is one of my top favorite Korean skincare brands! I will never be without the 6 peptide Skin booster! It feels so good on the skin and soaks in really quick! the skin booster doesn't have a smell at all. Now I really like the vitamin C serum I'm actually on my second bottle that I have bought from Cosrx! It does have a weird smell, and you have to keep it refrigerated so that it doesn't lose all its goodness. It works really well too I've notices some softening of my dark spots but its not drastic, but I don't use it every night either. I am acne prone, so I like to rotate my skincare especially with that much vitamin c. If you do not refrigerate it, it will start becoming a darker color and the smell gets a little stronger. I read that's because it is losing its potency. The price to get both these products in this bundle together is so much better than buying them separately. Using these products together make my skin so pretty! I only use the Vitamin c at night, but I use the peptide booster every single day, day and night. I had a bad bout of acne a year or so ago and cosrx and Korean skincare literally saved my skin! both are very effective and not too harsh on my skin. I am defiantly buying more soon!
I**A
I recommend this product
I’m so happy with this set. It even brought back a healthy colour to my face and my skin feels so smooth.
C**N
Tres satisfaite
Ideal pour ma petite routine du soir 👍👍👍
F**A
Effetto glow naturale: finalmente capisco la skincare coreana!
Ho iniziato a usare i prodotti di COSRX (Snail 96 Mucin Essence + Peptide Booster) da qualche settimana e devo dire che sono rimasta davvero sorpresa. La texture della snail essence è particolare all’inizio (un po’ “gelosa”), ma si assorbe bene e non lascia la pelle unta. Anzi, dopo pochi minuti la pelle risulta molto più morbida e luminosa. Ho notato già dopo pochi giorni: • pelle più idratata • meno zone secche • effetto “glow” naturale Il peptide booster invece aiuta tantissimo a far assorbire meglio tutto il resto della skincare. Da quando lo uso sento che i prodotti funzionano di più.
M**E
Best skin care.
Makes my skin feel so good.
M**L
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