Why does it have Cocamidopropyl Dimethylamine?

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.

Has anyone found that this serum reduces an oily face?

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.

Can this be used on my scalp under my hair?

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.

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Cos De BAHA Salicylic Acid 4% Exfoliating Facial Serum with Niacinamide, 1 Fl Oz (30ml)

Cos De BAHA Salicylic Acid 4% Exfoliating Facial Serum with Niacinamide, 1 Fl Oz (30ml)

Product ID: 137275532

Details

Scent
Fragrance Free
Skin Type
All Skin Types
Special Ingredients
Aloe Leaf Rose
Use for
Face

🌿Botanical soothing complex

💧Hydrating, non-drying formula

⚗️4% Salicylic Acid BHA power

Description

✨ Unlock flawless skin with science & nature in perfect harmony 🌿

GENTLE YET EFFECTIVE - Balances moisture while exfoliating—no dryness or redness, perfect for sensitive skin
BOTANICAL CALM CARE - Infused with Rose Damascena, Lavender, Green Tea & Melissa extracts for soothing hydration
DUAL ACTION REFINEMENT - Niacinamide + BHA combo visibly evens skin tone and reduces blemishes in one step
UNIVERSAL SKIN COMPATIBILITY - Ideal for oily, combination, and blemish-prone skin types seeking clarity and glow
PROFESSIONAL STRENGTH EXFOLIATION - 4% Salicylic Acid unclogs pores & smooths skin texture without irritation

Cos De BAHA Salicylic Acid 4% Exfoliating Facial Serum is a dermatologist-formulated, fragrance-free serum combining potent 4% BHA exfoliation with soothing botanical extracts and niacinamide. Designed for all skin types—especially oily and blemish-prone—it unclogs pores, refines texture, and evens skin tone while maintaining hydration and minimizing irritation. This 30ml powerhouse serum delivers professional-grade results in a gentle, daily-use formula.

Specifications

ASIN	B07SM9GBN2
ASIN	B07SM9GBN2
Active Ingredients	Salicylic Acid (BHA) 4%, Salicylic Acid, Niacinamide, Botanical Extracts, salicylic_acid
Best Sellers Rank	#214,906 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #4,280 in Facial Serums
Brand Name	Cos De BAHA
Customer Reviews	4.4 4.4 out of 5 stars (730)
Global Trade Identification Number	08809240318225
Item Form	Serum
Item Volume	30 ml
Item Weight	1 ounces
Item model number	CDS4
Manufacturer	cosdebaha.com
Manufacturer	cosdebaha.com
Manufacturer Part Number	1103824175
Material Features	Natural
Material Type Free	Alcohol Free
Model Number	CDS4
Number of Items	1
Product Benefits	Moisturizing, Texture Improvement, Pore Care, Hydration, Helps improve appearance of pores, skin texture, and clarity
Product Dimensions	1.4 x 1.4 x 4 inches; 1 ounces
Recommended Uses For Product	Blemishes,Smoothening
Scent Name	Fragrance Free
Skin Tone	Fair
Skin Type	All Skin Types, Especially Oily and Combination
Special Ingredients	Aloe Barbadensis Leaf Extract, Rose Damascena Extract, Lavender Extract, Green Tea Extract
Target Use Body Part	Face
Unit Count	1 Fluid Ounces

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