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
Stirling Soap Co.
Bergamot Lavender
None of Poliage’s flag groups listed
Drunk Elephant
Beste No. 9 Jelly Cleanser
Cleanser · Lists coconut derivatives
Allies of Skin
Beta Glucan & Resveratrol Advanced Hydrating Serum
Serum · None of Poliage’s flag groups listed
The INKEY List
Beta Hydroxy Acid (BHA) Serum
Serum · Lists exfoliating acid, salicylic acid
Black Girl Sunscreen
BGS Kids SPF 50 Sunscreen
Sunscreen · Lists essential oils, chemical UV filters
Black Girl Sunscreen
BGS Men SPF 30
Sunscreen · Lists essential oils, chemical UV filters
Black Girl Sunscreen
BGS Vanilla Crème SPF 30
Sunscreen · Lists fragrance, essential oils, chemical UV filters
CeraVe
BHA Exfoliating Toner
Toner · Lists salicylic acid
anubis
bio lifting concentrate
Lists fragrance
The INKEY List
Bio-Active Ceramide Eye Cream
Eye cream · Lists silicones
The INKEY List
Bio-Active Ceramide Moisturizer
Moisturizer · Lists silicones
Dr. Dennis Gross
Biocellulose Brightening Treatment Mask
Mask · Lists exfoliating acid, essential oils
Dermalogica
Biolumin C Eye Serum
Eye cream · Lists fragrance allergens, exfoliating acid, essential oils
Dermalogica
Biolumin C Gel Moisturizer
Moisturizer · Lists fragrance allergens, essential oils
Dermalogica
Biolumin C Heat Aging Protector SPF50
Sunscreen · Lists fragrance allergens, exfoliating acid, essential oils, chemical UV filters
Dermalogica
Biolumin C Night Restore Serum
Serum · Lists fragrance allergens, exfoliating acid, essential oils
Dermalogica
Biolumin C Serum
Serum · Lists fragrance allergens, exfoliating acid, essential oils
Ogx
Biotin & collagen conditioner
Lists fragrance, drying alcohol, silicones
Cosmia
Biphase micellaire waterproof
Lists fragrance, coconut derivatives
Bath & Body Works
Black Cherry Merlot Gentle & Clean Foaming Hand Soap
Lists fragrance, fragrance allergens, coconut derivatives
Black Girl Sunscreen
Black Girl Sunscreen SPF 30
Sunscreen · Lists essential oils, chemical UV filters
The Body Shop
Black Musk Body Lotion
Body lotion · Lists fragrance, fragrance allergens, silicones
Dermalogica
Blackhead Clearing Fizz Mask
Mask · Lists essential oils, coconut derivatives
Clinique
Blackhead Solutions 7 Day Deep Pore Cleanse & Scrub
Exfoliant · None of Poliage’s flag groups listed
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