Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.
SODIUM HYDROXIDE
Potassium or sodium hydroxide is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.
Research docs0Claims0Sources180Functionalkalinizing agent • BinderIdentifier1310-58-3
Concern score
70/100High concern based on regulatory listings.
Well researched
How we scored this
The concern value reflects this ingredient's chemical identity — its hazard profile from the published classifications and regulatory status below — not the safety of a product it appears in. A score near 40 is the baseline for ingredients with no specific signal (water scores 40 by design), so a mid-range value is not a safety verdict.
Concern score 70/100 (high) · high confidence.
Regional restrictions
- EU — restricted · Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: (a) Nail cuticle solvent (b) Hair straightener (c) pH adjuster for depilatories (d) Other uses as pH adjuster Callosity softener/remover (entry 15d) Maximum concentration: (a) 5% (b) 2% (General use) and 4.5% (Professional use) Entry 15d: 1,5% Other conditions: (b) 1. General use 2. Professional use (c) up to pH 12.7 (d) up to pH 11 15 d Contains alcakali, Avoid contact with eyes Keep out of reach of chindren ans Read directions for use carefully Conditions of use and warnings: (a) Contains alkali Avoid contact with eyes Can cause blindness Keep out of reach of children (b) 1. Contains alkali Avoid contact with eyes Can cause blindness Keep out of reach of children 2. For professional use only Avoid contact with eyes Can cause blindness (c) Keep out of reach of children Avoid contact with eyes
Where it appears
Prevalence of SODIUM HYDROXIDE in our catalog (epa_cpdat).
Products
11,688
Brands
6
Construction and building materialsRaw materialsHome maintenanceFurniture and furnishingsPersonal careLaboratory supplies
Typical roles
alkalinizing agentBinderCatalystchemical peelCleaning agent
Catalog
Found in these products
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Avoid
Evidence read
The published evidence profile currently shaping this ingredient record.
No evidence profiles are attached to this ingredient yet.
Linked research
Primary documents currently linked to this ingredient record.
No linked research documents are attached to this ingredient yet.
Extracted claims
Structured claim signals pulled from linked ingredient research.
No extracted claims are attached to this ingredient yet.
Regulatory status
Published jurisdiction-level classifications and regulatory designations for this ingredient.
EU
EC
Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: (a) Nail cuticle solvent (b) Hair straightener (c) pH adjuster for depilatories (d) Other uses as pH adjuster Callosity softener/remover (entry 15d) Maximum concentration: (a) 5% (b) 2% (General use) and 4.5% (Professional use) Entry 15d: 1,5% Other conditions: (b) 1. General use 2. Professional use (c) up to pH 12.7 (d) up to pH 11 15 d Contains alcakali, Avoid contact with eyes Keep out of reach of chindren ans Read directions for use carefully Conditions of use and warnings: (a) Contains alkali Avoid contact with eyes Can cause blindness Keep out of reach of children (b) 1. Contains alkali Avoid contact with eyes Can cause blindness Keep out of reach of children 2. For professional use only Avoid contact with eyes Can cause blindness (c) Keep out of reach of children Avoid contact with eyes
Effective: 2024-01-11View source →
US
EPA
EPA CPDat observed this chemical in 11688 composition records across product categories including Construction and building materials, Raw materials, Home maintenance. EPA CPDat classifies this chemical for functional uses including pH regulating agent, pH balancer, alkalinizing agent.
