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
Renee Rouleau
Sheer Moisture Lotion
Moisturizer · Lists fragrance, retinoid, essential oils, silicones
Hawaiian Tropic
Sheer Touch Oil-free Sunscreen Lotion 30 SPF
240 mL · Label from Canada · Lists fragrance, parabens, silicones, chemical UV filters, coconut derivatives
Hawaiian Tropic
Sheer Touch Oil-free Sunscreen Lotion SPF 15
240 mL · Label from Canada · Lists fragrance, parabens, silicones, chemical UV filters, coconut derivatives
Axe
Shock, eau de glacier & menthe extrème
250 ml · Label from France · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, formaldehyde releasers, coconut derivatives
Moroccanoil
Shower Gel Fragrance Originale
Body wash · 8.5 fl oz · Lists fragrance, drying alcohol, coconut derivatives
Cosmia
Shower gel mysterious time
0.25 l · Label from France and World · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Signal
Signal Bain de Bouche Défense Active Antibactérien
250 ml · Label from France · Lists fragrance, fragrance allergens, essential oils
Signal
Signal Dentifrice Expert Protection Blancheur 75ml Lot de 3
225 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Signal
Signal Dentifrice Expert Protection Complet
75 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Signal
Signal Dentifrice Expert Protection Complet 75ml Lot de 2
150 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Signal
Signal Dentifrice Expert Protection Haleine Pure
75 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Signal
Signal Dentifrice Expert Protection Haleine Pure 75ml Lot de 3
150 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Signal
Signal Expert Dentifrice Blancheur Repair Tube
75 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Signal
Signal White Now - Protection CC Fresh
75 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
Signal
SIGNAL White Now Dentifrice White + Protect Renforce Émail 75ml
75 ml · Label from France · Lists fragrance, sulfates
Signal
Signal White Now Dentifrice White + Protect Soin Gencives
75 ml · Label from France · Lists fragrance, fragrance allergens, sulfates
signature care sensitive skin body wash
Lists fragrance, coconut derivatives
Dae
Signature Shampoo - Full-Size
Shampoo · 10 fl oz · Lists fragrance, fragrance allergens, essential oils, silicones, coconut derivatives
Kenra Professional
Silkening Heat Crème
Hair styling · 3.4 fl oz · Lists fragrance, fragrance allergens, essential oils, silicones
Ole Henriksen
Silkfoliant Gentle Tri-Acid Exfoliating Toner for Dark Spots
Toner · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, salicylic acid
COVERGIRL
Simply Ageless + Olay 3-in-1 Liquid Foundation
Foundation · Lists fragrance, fragrance allergens, parabens, silicones, chemical UV filters
COVERGIRL
Simply Ageless Skin Blurring Serum
Serum · Lists fragrance, fragrance allergens, drying alcohol, retinoid, silicones, coconut derivatives
COVERGIRL
Simply Ageless Skin Perfector Essence
Toner · Lists fragrance allergens, silicones
Cetaphil
Skin Activator Hydrating & Firming Cream
Moisturizer · Lists exfoliating acid, silicones
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