Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,157 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 26, 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
L’Oréal
Ultra Doux Shampooing doux apaisant délicatesse d’avoine
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Ultra Doux Shampooing doux biodégradable à l’amande douce et fleur de lotus
250ml · Label from France · Lists fragrance, exfoliating acid, sulfates, salicylic acid, coconut derivatives
L’Oréal
Ultra doux shampooing illuminant
400ml · Label from France · Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, sulfates, salicylic acid, coconut derivatives
L’Oréal
Ultra Doux Shampooing Nourrissant Huile d’Avocat et Beurre de Karité
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, salicylic acid, coconut derivatives
L’Oréal
Ultra Doux Shampooing nourrissant Lait de Coco & Macadamia
250 ml · Label from France · Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, sulfates, salicylic acid, coconut derivatives
L’Oréal
Ultra Doux Shampooing nutrition extrême Olive Mythique
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
Garnier
ultra doux shampooing réparation intense érable guérisseur
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
L’Oréal
Ultra Doux Shampooing réparation intense Érable Guérisseur
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
L’Oréal
Ultra facial cream
125 ml · Label from Sweden · Lists parabens, silicones
Neutrogena
Ultra Gentle Hydrating Cleanser
None of Poliage’s flag groups listed
Cetaphil
Ultra Gentle Refreshing Body Wash
Body wash · Lists fragrance, sulfates, coconut derivatives
Cetaphil
Ultra Gentle Relaxing Body Wash
Body wash · Lists fragrance, sulfates, coconut derivatives
Cetaphil
Ultra Gentle Sensitive Body Wash
Body wash · Lists sulfates, coconut derivatives
Jergens
Ultra Healing
Lists fragrance, fragrance allergens, drying alcohol, parabens, silicones
Jergens
Ultra Healing Fragrance Free
Body lotion · 21 oz · Ingredients incomplete, can’t check
Jergens
Ultra Healing Moisturizer
Body lotion · Lists drying alcohol, silicones
Derma E
Ultra Lift Firming DMAE Moisturizer
Moisturizer · Lists retinoid, essential oils, silicones
First Aid Beauty
Ultra Repair Cream Intense Hydration
Moisturizer · Lists essential oils, silicones
First Aid Beauty
Ultra Repair Cream Toasted Coconut
Moisturizer · Lists essential oils, silicones
First Aid Beauty
Ultra Repair Cream Warm Vanilla
Moisturizer · Lists essential oils, silicones
First Aid Beauty
Ultra Repair Face Lotion with Colloidal Oatmeal
Moisturizer · Lists silicones
First Aid Beauty
Ultra Repair Firming Day Cream with Peptides, Niacinamide + Collagen
Moisturizer · Lists silicones
First Aid Beauty
Ultra Repair Firming Night Cream with Colloidal Oatmeal + Niacinamide
Moisturizer · Lists silicones
First Aid Beauty
Ultra Repair Hydration Boost Serum with Colloidal Oatmeal + Hyaluronic Acid
Serum · None of Poliage’s flag groups listed
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