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
Naturium
The Revealer Sulfur Body Wash
Body wash · 16.9 OZ · Lists exfoliating acid, coconut derivatives
Rituals
The Ritual of Hammam Hand Balm
175 ml · Label from Austria · Lists fragrance, fragrance allergens, essential oils
Rituals
The Ritual of Karma Instant Care Hand Lotion
50 ml · Label from Netherlands · Lists fragrance, fragrance allergens, drying alcohol, sulfates
Rituals
The ritual of namaste anti-aging day cream
Label from Portugal · Ingredients incomplete, can’t check
Tatcha
The Silk Sunscreen SPF 50
Sunscreen · 50 ml · Lists silicones
Naturium
The Smoother Glycolic Acid Body Lotion
Body lotion · 8 FL OZ · Lists exfoliating acid, silicones
Naturium
The Smoother Glycolic Acid Exfoliating Body Wash
Body wash · 16.9 OZ · Lists exfoliating acid, coconut derivatives
Crown Affair
The Smoothing Air Dry Cream
Hair styling · Lists fragrance, fragrance allergens, drying alcohol, essential oils, coconut derivatives
Crown Affair
The Volumizing Shampoo
Shampoo · 8 fl oz · Lists fragrance, fragrance allergens, essential oils, coconut derivatives
thick & full biotin & collagen shampoo
Ingredients incomplete, can’t check
Duke Cannon
Thick Body Wash
Body wash · Lists fragrance, coconut derivatives
Ouai
Thick Hair Conditioner
Conditioner · 10 OZ · Lists fragrance, fragrance allergens, drying alcohol, silicones
Ouai
Thick Hair Shampoo
Shampoo · 10 OZ · Lists fragrance, fragrance allergens, silicones, coconut derivatives
Cien
Time control - Crème pour la peau
50 ml · Label from France · Lists fragrance, fragrance allergens, drying alcohol, parabens, silicones
Timotei
Timotei 2en1 Shampooing Femme Douceur Huille d’Amande Douce Cheveux Normaux
300 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
Timotei
Timotei Après Shampoing Cheveux Secs Nourrissant au Miel et Jojoba 250ml
250 ml · Label from France · Lists fragrance
Timotei
Timotei Bio Après-Shampooing Femme Douceur infusé au Lait d’Amande Douce Cheveux Normaux 250ml
250 ml · Label from France · Lists fragrance
Timotei
Timotei Bio Après-Shampooing Femme Éclat Cheveux colorés Grenade & Karité 250ml
250 ml · Label from France · Ingredients incomplete, can’t check
Timotei
Timotei Bio Shampooing Femme Éclat Cheveux colorés Grenade & Karité 250ml
250 ml · Label from France · Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Timotei
Timotei Bio Shampooing Femme infusé au Lait d’Amande Douce Cosmebio 250ml
250 ml · Label from France · Lists fragrance, sulfates, coconut derivatives
Timotei
Timotei Blond Lumière Shampoing à l’Extrait de Camomille Lot 6x300ml
1800 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Blond Lumière Shampoing Femme à l’Extrait de Camomille
300 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
timotei champu fresco y fuerte
Label from Spain · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Timotei
Timotei Huiles Précieuses Shampooing Femme aux Huiles d’Argan Bio, d’Amande, Fleur de Jasmin Cheveux Secs et Ternes Lot 6x300ml
1800 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
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