---
product_id: 137275532
title: "Salicylic Acid 4% Exfoliating Facial Serum with Niacinamide, 1 Fl Oz (30ml)"
brand: "cos de baha"
price: "฿1147"
currency: THB
in_stock: true
reviews_count: 13
category: "Cos De Baha"
url: https://www.desertcart.co.th/products/137275532-salicylic-acid-4-exfoliating-facial-serum-with-niacinamide-1-fl
store_origin: TH
region: Thailand
---

# Botanical soothing complex Niacinamide skin tone refiner 4% Salicylic Acid BHA power Salicylic Acid 4% Exfoliating Facial Serum with Niacinamide, 1 Fl Oz (30ml)

**Brand:** cos de baha
**Price:** ฿1147
**Availability:** ✅ In Stock

## Summary

> ✨ Unlock flawless skin with science & nature in one bottle!

## Quick Answers

- **What is this?** Salicylic Acid 4% Exfoliating Facial Serum with Niacinamide, 1 Fl Oz (30ml) by cos de baha
- **How much does it cost?** ฿1147 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/137275532-salicylic-acid-4-exfoliating-facial-serum-with-niacinamide-1-fl)

## Best For

- cos de baha enthusiasts

## Why This Product

- Trusted cos de baha brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Botanical Calm & Care:** Infused with Rose Damascena, Lavender, Green Tea & Melissa for soothing skin relief
- • **Dual-Action Refinement:** Combines exfoliation with Niacinamide to visibly even skin tone and texture
- • **Gentle Hydration Balance:** Removes buildup without dryness or irritation—perfect for sensitive skin
- • **Universal Skin Compatibility:** Dermatologist-formulated for oily, combination, and blemish-prone skin types
- • **Professional-Strength Exfoliation:** Unclogs pores & smooths texture with potent 4% BHA formula

## Overview

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.

## Description

Professional-Grade Salicylic Acid Exfoliant Our Salicylic Acid 4% BHA Liquid Exfoliant is specifically formulated to help unclog pores and improve the appearance of skin texture. This powerful yet gentle formula works by helping to remove excess buildup from the skin's surface. Key Ingredients: - Salicylic Acid (BHA) - A beta hydroxy acid that helps exfoliate the skin surface - Niacinamide - Helps improve the appearance of skin tone and texture - Botanical Extracts - Including Rose Damascena, Lavender, Green Tea, and Melissa to help soothe the skin How to Use: 1. Apply to clean, dry skin 2. Use a cotton pad to apply a small amount over the face, avoiding the eye area 3. No need to rinse 4. Follow with moisturizer 5. Use 1-2 times weekly, gradually increasing frequency if needed 6. Always use sunscreen during daytime use Important Note about Packaging: Please be aware that product packaging may vary slightly as cosmetic labeling regulations change in different regions (Europe, USA). For products containing Aloe Vera, please note that due to updated cosmetic labeling requirements, Aloe Barbadensis Leaf Extract may be listed as "Water" on some packaging. This reflects a change in labeling practices, not a removal of the ingredient from the formula.

Review: 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 :)
Review: 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

## Features

- CONCENTRATED FORMULA: Professional-strength liquid exfoliant with 4% Salicylic Acid (BHA) helps unclog and minimize the appearance of pores for smoother-looking skin
- POWERFUL YET GENTLE: Formulated to help remove excess buildup while maintaining skin's moisture balance without over-drying or causing irritation
- ADVANCED BOTANICAL COMPLEX: Contains Rose Damascena, Lavender, Green Tea, and Melissa extracts to help provide a soothing experience while supporting balanced-looking skin
- MULTIFUNCTIONAL SERUM: Combines BHA with Niacinamide to help refine the appearance of skin tone and texture in one easy step
- SUITABLE FOR ALL SKIN TYPES: Especially helpful for oily, combination and blemish-prone skin to improve visible texture and clarity
- DERMATOLOGICALLY FORMULATED: Created with skin compatibility in mind for a product that helps deliver visible results while being suitable for regular use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Scent:** Fragrance Free
- **Skin Type:** All Skin Types, Especially Oily and Combination
- **Special Ingredients:** Aloe Barbadensis Leaf Extract, Rose Damascena Extract, Lavender Extract, Green Tea Extract
- **Use for:** Face

## Images

![Salicylic Acid 4% Exfoliating Facial Serum with Niacinamide, 1 Fl Oz (30ml) - Image 1](https://m.media-amazon.com/images/I/717DdLQ9lTL.jpg)

## Questions & Answers

**Q: Why does it have Cocamidopropyl Dimethylamine?**
A: Cocamidopropyl Dimethylamine and Salicylic Acid are sold together as Curcylic 40 by cosmetic ingredient suppliers. It helps make the salicylic acid water soluble and more sense since usually SA is lipid soluble only.

**Q: Has anyone found that this serum reduces an oily face?**
A: I did not find that it helped to reduce sebum production. My sebum production remained the same when wearing the serum, which I only put on at night. If you wear it during the day, you'll need to make sure that you put sunscreen over it. Alternately, you can wear it with a mattifying moisturizer.

**Q: Can this be used on my scalp under my hair?**
A: Well guess your scalp is under your hair  but dear this is a face serum. Try ACV once a week mixed with same amt of water as a rinse. Use tree tea shampoo also if you have oily scalp issues. The ACV will also clean any product build up and makes your hair soft. Good luck. BTW, I returned this product as it was too drying for my skin.

**Q: What is the pH level?**
A: Ph level is between 3.3 ~ 3.7.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This Stuff is Great!
*by H***H on August 17, 2025*

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 :)

### ⭐⭐⭐⭐⭐ The best purchase!
*by J***A on September 30, 2025*

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

### ⭐⭐⭐⭐ Good brand reputation
*by K***. on December 4, 2025*

Still using this product, hopefully will see results as I continue to use.

## Frequently Bought Together

- Cos De BAHA Salicylic Acid 4% Exfoliating Facial Serum with Niacinamide, 1 Fl Oz (30ml)
- Premium Azelaic Acid 10% Facial Serum - Advanced Formula with Niacinamide, Panthenol & Hyaluronic Acid - Professional Strength for Pores, Uneven Skin Tone & Texture - 5 Plant Extracts, 1 Fl Oz (30ml)
- Niacinamide 10% + Zinc PCA 1% Serum for Face - Pore Reducer + Uneven Skin Tone Treatment + Diminishes Acne Prone, Skin Balancing Pore Reducing, Restores Elasticity, 1 Fl Oz (30ml)

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**Shop now:** [https://www.desertcart.co.th/products/137275532-salicylic-acid-4-exfoliating-facial-serum-with-niacinamide-1-fl](https://www.desertcart.co.th/products/137275532-salicylic-acid-4-exfoliating-facial-serum-with-niacinamide-1-fl)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-30*