Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,058 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 22, 2026
In plain English
Lye. Used in small amounts to adjust pH, or to turn fats into soap.
What it does
Contains Sodium Hydroxide: buffering
Function listed in CosIng
Contains Sodium Hydroxide: denaturant
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 37890, accessed October 22, 2026. Also listed as natrii hydroxidum.
Products that contain Sodium Hydroxide
Lacura
Classic Anti-dandruff Shampoo
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Classic Clean
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
Head & Shoulders
Classic Clean Anti-dandruff Shampoo
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
Clean & Clear Persa Gel 10 Acne Treatment
Lists fragrance allergens
Clean and Clear Day/Night Cleanser
Lists fragrance, sulfates, parabens, coconut derivatives
COVERGIRL
Clean Fresh Nourishing Skin Tint
Foundation · Lists drying alcohol, silicones, coconut derivatives
Love Beauty And Planet
Clean Oceans Edition Deep Restore Conditioner
Lists fragrance, fragrance allergens
Love Beauty and Planet
Clean Oceans Edition Marine Moisture Conditioner
Lists fragrance allergens, essential oils
Camille Rose
Clean Rinse Clarifying Shampoo
Shampoo · Lists drying alcohol, exfoliating acid, essential oils, coconut derivatives
Cien
cleaning mask
Lists fragrance, sulfates, coconut derivatives
PRAVANA
Cleanse
Shampoo · Lists fragrance, fragrance allergens, retinoid, silicones, coconut derivatives
Nivea
cleansing cream
Lists fragrance
Biore
Clear & Breathable Cooling Cleanser
Cleanser · Lists fragrance, exfoliating acid, sulfates, parabens, formaldehyde releasers, salicylic acid, coconut derivatives
alverde
Clear 2 in 1 Peelingmaske - Heilerde Bio-Grüntee
Lists fragrance, fragrance allergens, drying alcohol
Bliss
Clear Genius Clarifying Gel Cleanser
Lists exfoliating acid, salicylic acid, coconut derivatives
alverde
Clear Gesichtstonic - Heilerde Bio-Grüntee
Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid
Dermalogica
Clearing Defense SPF30
Sunscreen · Lists fragrance allergens, essential oils, chemical UV filters
Frank Body
Clearing Face Scrub
Exfoliant · Lists fragrance allergens, exfoliating acid, salicylic acid
Dermalogica
Clearing Skin Wash
Cleanser · Lists fragrance allergens, exfoliating acid, salicylic acid, coconut derivatives
Garnier
Clearly Brighter Anti-Sun Damage* Daily Moisturizer SPF 30
Sunscreen · Lists fragrance, fragrance allergens, silicones, chemical UV filters, salicylic acid
Kiehl’s Since 1851
Clearly Corrective Brightening Exfoliating Daily Cleanser
Lists fragrance allergens, exfoliating acid, essential oils, salicylic acid, coconut derivatives
Adidas
Climacool
Lists fragrance, fragrance allergens, sulfates, chemical UV filters
Adidas
Climacool body hair face
Lists fragrance, fragrance allergens, sulfates, chemical UV filters, coconut derivatives
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.