

✨ Unlock flawless skin with science & nature in one bottle!
Cos De BAHA Salicylic Acid 4% Exfoliating Facial Serum is a professional-grade, dermatologist-formulated liquid exfoliant that combines 4% BHA with Niacinamide and a soothing botanical complex. Designed to unclog pores, refine skin texture, and balance moisture, it’s ideal for oily, combination, and blemish-prone skin. This multifunctional serum delivers visible clarity and smoothness without irritation, making it a must-have for a radiant, healthy complexion.







| ASIN | B07SM9GBN2 |
| Best Sellers Rank | #110,713 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #2,222 in Facial Serums |
| Customer Reviews | 4.4 4.4 out of 5 stars (694) |
| Item model number | CDS4 |
| Manufacturer | cosdebaha.com |
| Product Dimensions | 1.4 x 1.4 x 4 inches; 1 ounces |
H**H
This Stuff is Great!
I bought this honestly kind of thinking that it was probably a fake product, since I had never seen any skincare with more than 2% salicylic acid, and it just sat on my shelf for a couple years until very recently, when my skin was the worst it has been in several years and I had several deep cystic pimples literally all over my face. I was desperate and had tried all of my other serums and treatments to no avail, and I decided to give this one a shot since I hadn’t ever really tested it and, again, I was desperate. Well, almost 2 weeks later and my skin is more or less totally clear again and the hyperpigmentation from the pimples are also fading very nicely! And I’ve experienced no dryness, redness or irritation. I just put a squirt of it into my palm and mix that with my moisturizer and put them on together each night and it does the trick. So, I give this product 5 stars, because it works so much better than I could have ever hoped and it’s very affordable, even now with inflation prices! Buy this if your skin is sensitive but you need serious acne fighting ingredients. This product seems to do it all, at least for me :)
J**A
The best purchase!
I love this serum, it removes spots and blackheads, it flakes the skin a little when you first start using it, after that this doesn't happen, it fades acne
K**.
Good brand reputation
Still using this product, hopefully will see results as I continue to use.
D**Y
I think it's pretty potent.
I do think it helps my skin. (I produce a ridiculous amount of oil and I have Sebaceous Hyperplasia. )Just be careful not to go crazy with it or you will have a red face for a couple of days. I plan to order it again.
T**R
Blast Blemishes to Hell!!
I have super sensitive, highly reactive skin. Any little thing sets my skin off causing acne, rashes and scarring. So I was very apprehensive in trying this serum but I needed to smash random hormonal zits that pop up during “that time of the month”. Shockingly, this does the trick and doesn’t freak my sensitive skin out!! Start with once a week and work up to once a day. You can also use this as a spot treatment. It’s effective at minimizing zits and drying them out. Note: It is very effective at drying out pimples but also drying your skin out too! So be sure to use a good moisturizer with this too. I highly recommend this, especially for sensitive, reactive, dry skin.
V**A
Disappointing Packaging: Missing a Significant Amount of Product
I received the product yesterday and have only used it once, so I can't say yet whether I like it or not. However, as you can see from the photos, the jar was not full—there was a significant amount of product missing. This seems unacceptable to me.
M**.
Amazing for very dry feet
I use this about every other night on my feet, followed by a urea cream, and my chronically dry and callused feet have never been softer. I get pedicures every 6 weeks and have still struggled with them getting rough within 2 or 3 weeks. Nothing has ever worked for me before. I will say that, as we hit sandal season, aka no sock season, I have started to notice some minor issues again, but transitioning to using this daily, instead of every other day, seems to be doing the trick.
S**D
Better than alot on the market
I was intrigued to find this product since most salicylic acid serums contain only salicylic 2% and the expectation is that a high percentage won't really work better. I have found that to not be the case with this serum. While I was enjoying using the ordinary's 2% salicylic serum on my breakouts, this one works better and faster. The formulation is not drying and non irritating, so using this once a day on the areas with breakouts is completely fine. It is an excellent formulation and the included niacinamide which helps with balancing sebum production as well as brightening the skin is a bonus. A little goes a long way so do not apply to much of the product because you will have to keep rubbing it in for a while for complete absorption. I am a skincare junkie and highly recommend this for persons with acne.
た**ま
治り方バグ!高校生ニキビが治らなくて困ってたけど毛穴のポツポツ?みたいなのが原因でニキビ繰り返してる人とかにはすごいくらい効きます!自分は3日でざらつき減ったのがわかりました笑後保湿はかなり必須でクリームで蓋をしても翌朝少し突っ張ります連続しようは3日までですね。ニキビの薬使っても治らないって人は毛穴詰まりがあってそもそも薬が浸透しないってことが多いと思うのでその原因である詰まりをこれで解消すればすごいくらい肌綺麗になってニキビも治ります!自分は脂性肌でざらつきがあったので乾燥肌の人にはお勧めしません!脂性肌で毛穴詰まりの人特化という感じですね
P**S
After trying everything and going backwards and forwards to the Drs about my acne, it's lovely to FINALLY find something that works! I use this morning and night, after washing my face with Cetaphil Oily Skin Cleanser and then waiting 30ish mins and applying Cetaphil Moisturising Cream - this combo has worked wonders and my skin is looking so much healthier! Can't recommend enough!
M**N
I really wanted this to work because I had seen all the good reviews of the ordinary version But this was like there was no salicylic acid inside I have used many salicylic acid products before and know the effect this has on my skin This did nothing & it’s texture was like a foaming face wash... I literally feel like I bought a foam face wash buying this ‘serum’
A**ー
Great product 👍👍
ジ**ン
伸びはかなり良い。3滴で顔全体を覆うことができる。 肌のザラザラ感と 黒ずみをとってくれることに期待。
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