Sodium Hydroxide
Sodium Hydroxide is a buffering and denaturant ingredient. It’s in 2,160 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
Glow Recipe
Plum Plump Hyaluronic Cream
Moisturizer · 50 ml · Lists fragrance
Crest
Plus Complete Extra Whitening Toothpaste
50 mL · Label from Canada · Lists fragrance, sulfates
Glow Recipe
Pomegranate Peptide Firming Serum
Serum · 30 ml · Lists fragrance, silicones
Biore
Pore Refining Bubbling Nose Mask
Mask · Lists exfoliating acid, silicones, coconut derivatives
Thayers
Pore Refining Toner Pads with Witch Hazel & Salicylic Acid
Toner · Lists fragrance allergens, exfoliating acid, essential oils, salicylic acid, coconut derivatives
Biore
Pore Unclogging Scrub
Exfoliant · 5 fl oz · Lists fragrance, silicones, chemical UV filters, formaldehyde releasers, coconut derivatives
L’Oréal
Pore-cleansing exfoliator
100 ml · Label from Spain · Lists fragrance, fragrance allergens, sulfates
Dermalogica
Porescreen SPF40
Sunscreen · Lists fragrance allergens, exfoliating acid, silicones
Aveeno
Positively Radiant Brightening Facial Cleanser
Lists fragrance, sulfates, parabens, formaldehyde releasers, coconut derivatives
Harry’s
Post-Shave Balm
Lists fragrance, fragrance allergens, silicones
Henkel
Power Shampoo for Men
440 ml · Label from Austria and Germany · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Dermalogica
powerbright dark spot peel
Exfoliant · Lists fragrance allergens, exfoliating acid, essential oils, coconut derivatives
Dermalogica
Powerbright Dark Spot Serum
Serum · Lists fragrance allergens, essential oils, coconut derivatives
Dermalogica
Powerbright Moisturizer SPF 50
Sunscreen · Lists fragrance allergens, exfoliating acid, essential oils, silicones, chemical UV filters
Dermalogica
Powerbright Overnight Cream
Moisturizer · Lists fragrance allergens, essential oils, silicones
Medik8
Press & Clear
Toner · Lists exfoliating acid, salicylic acid
Medik8
Press & Glow
Toner · Lists exfoliating acid
Naturopathica
Prickly Pear & Salicylic Acid Acne Clearing Tonic
Toner · Lists fragrance allergens, exfoliating acid, essential oils, salicylic acid
R+Co
PRIMARY COLOR SHAMPOO
Shampoo · 8.5 OZ · Lists fragrance, fragrance allergens, essential oils
Dermalogica
Prisma Protect SPF30
Sunscreen · Lists fragrance allergens, essential oils, silicones, chemical UV filters
Dermalogica
Pro Collagen Banking Serum
Serum · Lists fragrance allergens, essential oils, coconut derivatives
Head and shoulders
Pro expert
250ml · Label from Sweden · Ingredients incomplete, can’t check
Oral-B
Pro expert
1 · Label from France · Lists fragrance, fragrance allergens, sulfates
L’Oréal Professionnel
Pro Longer
Shampoo · Lists fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
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