Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,161 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
Neutrogena
Neutrogena Hydro Boost Aqua Reinigingsgel
200 ml · Label from Netherlands · Lists fragrance, sulfates, coconut derivatives
Neutrogena
Neutrogena Hydro Boost Exfoliating Cleanser
14gg · Label from Brazil · Ingredients incomplete, can’t check
Neutrogena
Neutrogena Hydro Boost Gel-Cream Eye
14g · Label from Brazil · Lists silicones
Neutrogena
Neutrogena Hydro Boost Water Gel
250ml · Label from Brazil · Lists fragrance, parabens, silicones
Neutrogena
Neutrogena Oil-Free Acne Wash
177 ml · Label from Brazil · Lists fragrance, exfoliating acid, salicylic acid, coconut derivatives
Henkel
Neutromed lenitivo ph 5,5
250 ml · Label from Italy · Lists fragrance, fragrance allergens, exfoliating acid, sulfates, salicylic acid, coconut derivatives
Naturium
Niacinamide Gel Cream 5%
Moisturizer · Lists silicones, coconut derivatives
Balea
Niacinamide Tagescreme
50 ml · Label from outside the U.S. · Lists chemical UV filters
Henkel
Night Passion
250 ml · Label from France · Lists fragrance, fragrance allergens, sulfates, chemical UV filters, salicylic acid, coconut derivatives
night relaxing
240ml · Label from Canada · Lists fragrance, sulfates, parabens, coconut derivatives
nioxin shampoo
Ingredients incomplete, can’t check
nivea
Lists fragrance, drying alcohol, sulfates, silicones
Null
nivea
200 ml · Label from Allemand · Ingredients incomplete, can’t check
Nivea intense healing
Lists fragrance, sulfates, silicones
Beiersdorf
Nivea After Shave Balm Moisturising 100ml
Label from Norway · Lists fragrance, fragrance allergens, drying alcohol, silicones, coconut derivatives
Nivea
Nivea Aloe Vera Hand Cream
75ml · Label from United Kingdom · Lists fragrance, fragrance allergens, silicones
nivea
nivea body lotion
250ml · Label from Canada · Lists fragrance, silicones
Nivea
Nivea body milk
Body lotion · Label from India · Lists fragrance, fragrance allergens, drying alcohol, essential oils, silicones
Nivea
Nivea Cocoa nourish
Moisturizer · 400 ml · Label from India · Lists fragrance, fragrance allergens, sulfates, silicones
nivea
nivea cream
300 ml · Label from Romania · Ingredients incomplete, can’t check
Nivea
NIVEA CREME DARK SPOT REDUCTION
75 · Label from India · Ingredients incomplete, can’t check
Beiersdorf
Nivea Dagkrem Q10 Antirynke 50ml
50 ml · Label from Norway · Lists fragrance, chemical UV filters, coconut derivatives
Nivea
Nivea daily essentials sensitive day cream spf 15
1 · Label from Ireland · Lists chemical UV filters
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.