Calcium hydroxide in EU cosmetics: Annex III, entry 15c
Calcium hydroxide: the entry states a maximum concentration of (a) 7 % (as calcium hydroxide); its other lines add conditions, see below. Annex III, entry 15c, Regulation (EC) No 1223/2009, consolidated 18 May 2026.
- Annex
- III: List of substances which cosmetic products must not contain except subject to the restrictions laid down
- Reference number
- 15c
- Chemical name/INN
- Calcium hydroxide
- Name of Common Ingredients Glossary
- Calcium hydroxide
- CAS number
- 1305-62-0
- EC number
- 215-137-3
- Version
- Consolidated version of 18 May 2026
- Official source
- Regulation (EC) No 1223/2009, consolidated text
Official wording: restrictions
- Product type, body parts: (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt | Maximum concentration in ready for use preparation: (a) 7 % (as calcium hydroxide)
- Product type, body parts: (b) pH adjuster for depilatories | Other: (b) pH < 12,7
- Product type, body parts: (c) Other uses (e.g. pH adjuster, processing aid) | Other: (c) pH < 11
Official wording: conditions of use and warnings
(a) Contains alkali
Avoid contact with eyes
Keep out of reach of children
Can cause blindness
(b) Contains alkali
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