skincarecheck
INCI ingredient

Calcium Hydroxide

Calcium Hydroxide appears on 61 ingredient lists in our database, most often in hair removals.

What it triggers

  • Vegan originYesno animal source
  • FragranceNonot a perfume ingredient
  • ParabenNonot a preservative of this family
  • SulfateNonot a sulfate surfactant
  • SiliconeNonot a silicone
  • AlcoholNonot a drying alcohol

What it does

Calcium Hydroxide appears on 61 ingredient lists in our database, most often in hair removals.

It does not belong to any of the six groups we check, so it never changes a verdict.

We have not written the plain-language note for this ingredient yet; the facts above come straight from how it is classified.

Functions: buffering

Products with Calcium Hydroxide

in 61 products

Showing 24 of 61 products with this ingredient, most scanned first.

In the EU ingredient database

Functions listed by CosIng
  • buffering
  • buffering: Stabilising the pH of an aqueous medium in a narrow range even if an acid or base is added. Altering and/or maintaining a cosmetic product's pH at the desired level.

CAS 1305-62-0 · EC 215-137-3

EU regulation

Listed in Annex III (ref. 15c) of the EU Cosmetics Regulation, maximum concentration (a) 7% (as calcium hydroxide). (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt (b) pH ajuster for depilatories (c) Other uses (e.g. pH adjuster, processing aid) III/15c (a) Contains alkali Avoid contact with eyes Keep out of reach of children Can cause blindness (b) Contains alkali Keep out of reach of children Avoid contact with eyes

Source: CosIng, European Commission. Informative, no legal value; the regulation text is the reference.

Classification from the INCI name; product lists from Open Beauty Facts.Report a mistake