CALCIUM HYDROXIDE

"Low penalty" in all categories.

Origin(s): Synthetic
Other language: Hydroxyde de calcium
INCI name: CALCIUM HYDROXIDE
EINECS/ELINCS number: 215-137-3
Food additive: E526
Classification: Regulated
Organic-compatible (COSMOS Reference)

Namely Calcium hydroxide is also called "slaked lime" or "hydrated lime". This element is formed with water and lime. Limewater is the essential base ingredient for making oleo-limestone liniments. We find calcium hydroxide in hair straightening products, it has the ability to change the structure of the hair: it destroys the sulfide bonds that link the amino acids in locks of hair and changes their physical structure. Finally, it is also used in some products as a PH regulator, being basically alkaline.

Restriction in Europe: III/15c
The maximum allowable limits and concentrations are dependent on the use of the ingredient in:
a) Hair straightening products, containing two components: calcium hydroxide and a guanidine salt: 7% (calcium hydroxide).
b) pH regulators for depilatories: pH <12.7.
(c) Other uses (eg pH regulator, processing aid): pH <11

Wording of conditions of employment and warnings:
a) Contains an alkaline agent
Avoid contact with eyes
Keep out of reach of children
Danger of blindness

b) Contains an alkaline agent
Keep out of reach of children
Avoid contact with eyes

Its functions (INCI)