Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,159 products on Poliage, most often body lotion, moisturizer and body wash. Avoid lists on Poliage that include it: none.
Updated October 25, 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
frenshe
Moisture Shampoo
Shampoo · Lists fragrance, fragrance allergens, coconut derivatives
Kenra Professional
Moisture Shampoo
Shampoo · 10.1 fl oz · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Olaplex
MOISTURIZE AND MEND LEAVE-IN CONDITIONER FULL SIZE
Conditioner · 100 mL · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, coconut derivatives
Olaplex
MOISTURIZE AND MEND LEAVE-IN CONDITIONER TRAVEL SIZE
Conditioner · 30 mL · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, coconut derivatives
Cetaphil
Moisturizing Cream
Moisturizer · Lists fragrance allergens, silicones
Nivea
Moisturizing Post Shave Balm
3.3 fl oz (100 mL) · Lists fragrance, drying alcohol, silicones, coconut derivatives
Allies of Skin
Molecular Barrier Recovery Cream Balm
Moisturizer · None of Poliage’s flag groups listed
Allies of Skin
Molecular Silk Amino Hydrating Cleanser
Cleanser · Lists exfoliating acid, coconut derivatives
Unilever
Mon coffret douceur
1 pièce (0.746 kg) · Label from France · Lists fragrance, fragrance allergens, parabens, silicones, formaldehyde releasers, coconut derivatives
Monday
Monday Moisture Conditioner
354ml · Label from Netherlands · Ingredients incomplete, can’t check
Versed
Mood Lighting Glow Drops
Serum · None of Poliage’s flag groups listed
Tree Hut
moonlight glow whipped body butter
Body lotion · Lists fragrance, fragrance allergens, drying alcohol, silicones
The Body Shop
Moringa Body Lotion
Body lotion · 200ml · Lists fragrance, fragrance allergens, coconut derivatives
The Body Shop
Moringa Shine & Protection Conditioner
Conditioner · 250ml · Lists fragrance, fragrance allergens, coconut derivatives
Tree Hut
Moroccan Rose Whipped Body Butter
Body lotion · Lists fragrance, fragrance allergens, silicones
Cosmia
Mousse lavante mains
0.3 l · Label from France · Lists fragrance, fragrance allergens, essential oils, sulfates, coconut derivatives
mudmasky serum infused moisturizer
Ingredients incomplete, can’t check
Dermalogica
Multi Active Toner
Toner · Lists fragrance allergens, essential oils, silicones
Allies of Skin
Multi Nutrient & Dioic Renewing Cream
Moisturizer · None of Poliage’s flag groups listed
Allies of Skin
Multi Peptides & Growth Factors (GF) Advanced Lifting Serum
Serum · Ingredients incomplete, can’t check
Naturium
Multi-Bright Advanced Serum
Serum · Lists exfoliating acid
Naturium
Multi-Bright Milky Toner
Toner · Lists exfoliating acid
The Ordinary
Multi-Peptide + Copper Peptides 1% Serum
Serum · None of Poliage’s flag groups listed
The Ordinary
Multi-Peptide + HA Serum
Serum · None of Poliage’s flag groups listed
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