For adults: usually safe in finished skin products because it’s used in very small amounts and neutralized so the product isn’t harsh. The biggest risk is irritation or burns from concentrated forms or poorly formulated products.
Use only finished cosmetic products as directed. Avoid products that feel sharply burning or stinging and stop use if you get redness or pain. Don’t use products that list high alkaline or strong chemical warnings. Never handle raw or concentrated sodium hydroxide (household drain cleaners, industrial lye) without protective gear; if you do, wear gloves and eye protection and keep it away from children.
Regulatory reviews and safety panels (for example the EU cosmetics rules and industry safety assessments) restrict or limit its use in cosmetics and note it must be formulated to avoid irritation. Other government and scientific sources (Environment Canada, EPA and medical reviews) note handling hazards and some evidence of organ toxicity at higher exposures. Watch for strong burning, eye contact, or breathing problems and seek medical help if those occur.
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This ingredient is found in the following products:
This list shows products that contain Sodium Hydroxide or its alternative names.
Yes, Sodium Hydroxide is generally considered safe for adults based on current research.
Banned or heavily restricted in one or more countries.
May harm organs like liver, kidneys, or lungs with repeated use.
Can make breathing issues like asthma worse in babies and kids.
Sodium Hydroxide is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.
The appropriate age depends on the specific ingredient properties and concentration. This analysis is for adults. Use the age selector above to check other ages.
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