SODIUM HYDROXIDE

Sodium hydroxide is an alkali metal hydroxide.

Source: PubChem

US FDA substance register · UNII 55X04QC32I · registered name Sodium hydroxide · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Restricted

South Korea · Taiwan

Source: MFDS (Korea) cosmetic regulatory information

Argentina · Brazil

• Field of application and/or use : (a) Removers cuticles (b) Hair strengthener: 1. General use 2. Professional use (c) To adjust pH depilatories d) For pH adjustments in other products
• Maximum concentration permitted at final product : (a) 5% mass (b) 1. 2% in mass 2. 4,5% in mass b: the sum of the calculated mass hydroxides such as sodium hydroxide (c) to pH 12.7 d) to pH 11
• Use conditions and warnings that must appear on the label : a) - Contains alkali - Avoid contact with eyes - Can cause blindness - Keep out of reach of children b) 1 and 2 - Contains alkali - Avoid contact with eyes - Can cause blindness - Keep out of reach of children - For professional use only (if applicable) c) - Keep out of reach of children - Avoid contact with eyes

ASEAN

• Field of application and/or use : (a) Nail cuticle solvent (b) Hair straightener 1. General use 2. Professional use (c) pH adjuster – for depilatories (d) Other uses as pH adjuster
• Maximum authorised concentration in the finished cosmetic product : (a) 5% by weight (4) (b) 1. 2% by weight (4) 2. 4.5% by weight (4) (c) up to pH 12.7 (d) up to pH 11
• Conditions of use and warning which must be printed on the labels : (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

China

• Maximum concentration : (a) 5%
• (b)
• 1. 2%
• 2. 4.5%
• (c) pH≤12.7
• (d) pH≤11
• (b)

European Union

• Product Type, body parts : (a) Nail cuticle solvent (b) Hair straightener (c) pH adjuster for depilatories (d) Other uses as pH adjuster 15d- Callosity softener/remover
• Maximum concentration in ready for use preparation : (a) 5.0% (5) (b) 1. 2% (5) 2. 4.5% (5) 15d- 1.5% (5)
• Other : (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
• Wording of 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

Korea’s toxic-substance GHS classification: Danger · H290 (category 1) · H314 (category 1A) · H312 (category 4)

Source: Korea toxic substances GHS register (NIER)

Restriction III/15a · Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

Reviewed by CIR: Safety Assessment of Inorganic Hydroxides as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)