Cos De BAHA S4 Salicylic Acid BHA 4% Serum 30ml
The effects of Salicylic Acid are beyond description. Salicylic Acid takes some time to absorb and act on the skin, so it does not show immediate effect. But once its absorbed into the skin, its more powerful! It not only solves our annoying acne problems, but it also has antibacterial effects to prevent pimples in advance. It also removes skin irritation that prevents skin circulation and has a moisturizing effect. This helps to drive Blackhead out of your skin! On the other hand, Salicylic Acid, which shows its efficacy when using it consistently, can cause side effects on the skin if you use this ingredient incorrectly. Cos De BAHA wants to introduce the S4 Serum at a safe rate so that everyone can enjoy the effects of Salicylic Acid safely. Now, take care of your blocked pores with S4 Serum and make your skin much healthier. It is an effective treatment for the following issues: help fade pigmentation helps fade hyperpigmentation impede melanin production reducing overall redness tied to skin elasticity protects against sun damage.
The effects of Salicylic Acid are beyond description. Salicylic Acid takes some time to absorb and act on the skin, so it does not show immediate effect. But once its absorbed into the skin, its more powerful! It not only solves our annoying acne problems, but it also has antibacterial effects to prevent pimples in advance. It also removes skin irritation that prevents skin circulation and has a moisturizing effect. This helps to drive Blackhead out of your skin! On the other hand, Salicylic Acid, which shows its efficacy when using it consistently, can cause side effects on the skin if you use this ingredient incorrectly. Cos De BAHA wants to introduce the S4 Serum at a safe rate so that everyone can enjoy the effects of Salicylic Acid safely. Now, take care of your blocked pores with S4 Serum and make your skin much healthier. It is an effective treatment for the following issues: help fade pigmentation helps fade hyperpigmentation impede melanin production reducing overall redness tied to skin elasticity protects against sun damage.
The effects of Salicylic Acid are beyond description. Salicylic Acid takes some time to absorb and act on the skin, so it does not show immediate effect. But once its absorbed into the skin, its more powerful! It not only solves our annoying acne problems, but it also has antibacterial effects to prevent pimples in advance. It also removes skin irritation that prevents skin circulation and has a moisturizing effect. This helps to drive Blackhead out of your skin! On the other hand, Salicylic Acid, which shows its efficacy when using it consistently, can cause side effects on the skin if you use this ingredient incorrectly. Cos De BAHA wants to introduce the S4 Serum at a safe rate so that everyone can enjoy the effects of Salicylic Acid safely. Now, take care of your blocked pores with S4 Serum and make your skin much healthier. It is an effective treatment for the following issues: help fade pigmentation helps fade hyperpigmentation impede melanin production reducing overall redness tied to skin elasticity protects against sun damage.
The effects of Salicylic Acid are beyond description. Salicylic Acid takes some time to absorb and act on the skin, so it does not show immediate effect. But once its absorbed into the skin, its more powerful! It not only solves our annoying acne problems, but it also has antibacterial effects to prevent pimples in advance. It also removes skin irritation that prevents skin circulation and has a moisturizing effect. This helps to drive Blackhead out of your skin! On the other hand, Salicylic Acid, which shows its efficacy when using it consistently, can cause side effects on the skin if you use this ingredient incorrectly. Cos De BAHA wants to introduce the S4 Serum at a safe rate so that everyone can enjoy the effects of Salicylic Acid safely. Now, take care of your blocked pores with S4 Serum and make your skin much healthier. It is an effective treatment for the following issues: help fade pigmentation helps fade hyperpigmentation impede melanin production reducing overall redness tied to skin elasticity protects against sun damage.
in 11 offers
The lowest price for Cos De BAHA S4 Salicylic Acid BHA 4% Serum 30ml right now is $12.63 at Stylevana AU, compared across 10 retailers.
The all-time low was $11.24 on 18 Aug 2025 — today's price is 12% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 10 June 2026.
Last updated at 10/06/2026 00:11:14
Cos de Baha Salicylic Acid BHA 4% Liquid 30 ml
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[DEAL]Cos De BAHA - Salicylic Acid 4% Serum (S4) - 30ml
Delivery $8.29
Cos De BAHA - Salicylic Acid 4% Serum (S4) - 30ml
Delivery $8.29
Cos De BAHA Salicylic Acid BHA 4% Serum (S4) 30ml
Cos De BAHA - Salicylic Acid 4% Serum (S4) - 30ml at Beauty Amora
Delivery $7.99
CosDeBAHA Salicylic Acid 4% Serum (30ml) (S4) | K-Beauty
Delivery $10.99
Buy Cos De BAHA Salicylic Acid BHA 4% Serum 30ml in Australia - Korean Skincare and Beauty
Delivery between 11–18 June $6.95
Cos De BAHA Salicylic Acid 4% Exfoliating Facial Serum With Niacinamide, 1 Fl Oz
Delivery $28.49
COS DE BAHA – S4 Salicylic Acid BHA 4% Serum
Free delivery
BHA Salicylic Acid 4% Exfoliant Serum 1oz with Niacinamide - Acne Spot Treatment + Redness Relief + Pore Minimizer + Pore Cleaner + Alcohol Free, 1oz
Free delivery between 19–24 June
originally posted on iherb.com
I'm a regular user of Paula's Choice 2% BHA Liquid. I want to try a higher percentage of salicylic acid to combat the clogged pores and blackheads on my oily combo skin. I was initially wary that this high percentage might irritate my skin if i apply twice a day (like what i did with PC BHA). To my surprise, this formulation is very gentle on the skin. It does not dry up or irritate my skin. It even feels hydrating probably due to the high aloe vera content (first on the ingredient list). It is also accompanied by the powerful skin soothing duo of Artemisia and Green Tea. I appreciate the addition of brightening Niacinamide in the formulation as well. The texture is clear viscous liquid. The only downside, it creates white milky texture when you swirl this on the ... MoreI'm a regular user of Paula's Choice 2% BHA Liquid. I want to try a higher percentage of salicylic acid to combat the clogged pores and blackheads on my oily combo skin. I was initially wary that this high percentage might irritate my skin if i apply twice a day (like what i did with PC BHA). To my surprise, this formulation is very gentle on the skin. It does not dry up or irritate my skin. It even feels hydrating probably due to the high aloe vera content (first on the ingredient list). It is also accompanied by the powerful skin soothing duo of Artemisia and Green Tea. I appreciate the addition of brightening Niacinamide in the formulation as well. The texture is clear viscous liquid. The only downside, it creates white milky texture when you swirl this on the skin. But it will shortly get absorbed by the skin leaving no greasiness/tackiness. I apply twice a day, concentrating on my t-zone and large pores area.
originally posted on iherb.com
I am 37 years old. 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 ... MoreI am 37 years old. 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.
originally posted on iherb.com
Well priced, beneficial product. Good quality. Quick delivery. Gentle on skin. Can use frequently. No scent. Good consistency. May be good for sensitive skin. Works well with a mask . Results seen in a few days. Well packaged. Value for money. Can recommend product.
| Best By | October 26 2025 |
| Dimensions | 9.8 x 3.7 x 3.7 cm , 0.07 kg |
Cos de Baha Salicylic Acid BHA 4% Liquid 30 ml
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[DEAL]Cos De BAHA - Salicylic Acid 4% Serum (S4) - 30ml
Delivery $8.29
Cos De BAHA - Salicylic Acid 4% Serum (S4) - 30ml
Delivery $8.29
Cos De BAHA Salicylic Acid BHA 4% Serum (S4) 30ml
Cos De BAHA - Salicylic Acid 4% Serum (S4) - 30ml at Beauty Amora
Delivery $7.99
I'm a regular user of Paula's Choice 2% BHA Liquid. I want to try a higher percentage of salicylic acid to combat the clogged pores and blackheads on my oily combo skin. I was initially wary that this high percentage might irritate my skin if i apply twice a day (like what i did with PC BHA). To my surprise, this formulation is very gentle on the skin. It does not dry up or irritate my skin. It even feels hydrating probably due to the high aloe vera content (first on the ingredient list). It is also accompanied by the powerful skin soothing duo of Artemisia and Green Tea. I appreciate the addition of brightening Niacinamide in the formulation as well. The texture is clear viscous liquid. The only downside, it creates white milky texture when you swirl this on the ... MoreI'm a regular user of Paula's Choice 2% BHA Liquid. I want to try a higher percentage of salicylic acid to combat the clogged pores and blackheads on my oily combo skin. I was initially wary that this high percentage might irritate my skin if i apply twice a day (like what i did with PC BHA). To my surprise, this formulation is very gentle on the skin. It does not dry up or irritate my skin. It even feels hydrating probably due to the high aloe vera content (first on the ingredient list). It is also accompanied by the powerful skin soothing duo of Artemisia and Green Tea. I appreciate the addition of brightening Niacinamide in the formulation as well. The texture is clear viscous liquid. The only downside, it creates white milky texture when you swirl this on the skin. But it will shortly get absorbed by the skin leaving no greasiness/tackiness. I apply twice a day, concentrating on my t-zone and large pores area.
I am 37 years old. 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 ... MoreI am 37 years old. 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.
Well priced, beneficial product. Good quality. Quick delivery. Gentle on skin. Can use frequently. No scent. Good consistency. May be good for sensitive skin. Works well with a mask . Results seen in a few days. Well packaged. Value for money. Can recommend product.
This is amazing for sebaceous filaments on the nose. breaks them up in a couple of days. I apply it daytime under my moisturiser and sunscreen. I use the tiniest amount. While it is 4% it is not irritating to me at all. no peeling at all over the first week of using. I also used it on two infected ingrown hairs and it really took down the swelling. fantastic product.
Perfect for bumpy skin with lots of whiteheads so deep under the skin that you can't remove them without using a needle. The salicylic acid somehow manages to get there and make them look significantly smaller. I could see the difference within only a few days. In fact, you will probably realise how much good it is for your skin once you run out of product and go a few days without using it. The bumps start to re-emerge almost immediately. I think it's the concentration of salicylic acid that keeps them in check. I used Paula's Choice before and it was equally good, but a lot pricier. If your skin loves salicylic acid, you will love this product :)
Good qualityGood ingredientScent goodGood smellHigh careGood scent that easy use with high quality and full size18 age no package with wow benefit and composition low sensitive and gentle low frequency concernHigh ingredient dosageTaste wowEasy useGood sizeGood packageBenefit wowAgeServing easyFrequency easyGood dietFlavor good
Pros:• love the Scent• great size for the price• not drying at all(even a little hydrating in my opinion)• reduced acnecons:• didn’t really help with my Black heads• the package is a little uncomfortable to useWonderful exfoliator would recommend.
This serum is indeed strong, so you need to use sparingly to avoid getting sensitive skin. However, it is actually surprisingly moisturizing and silky as long as you don't overdo it. I sometimes mix some with my oil cleanser and wash it off, and that's enough. I use it as a leave-on around my nose, which is where I get a lot of comodonal acne. It has definitely been clearing up now that I've been using this. I really like it. I've never bought a different salicylic acid serum so I don't know what to compare it to. But I think this is the only one I'm ever going to buy, it just works lol
| Best By | October 26 2025 |
| Dimensions | 9.8 x 3.7 x 3.7 cm , 0.07 kg |