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Annex III Entry 15c 17/10/2010

CALCIUM HYDROXIDE

Calcium hydroxide

CALCIUM HYDROXIDE is listed in Annex III and may only be used under the conditions shown in this record. Maximum concentration in this record: (a) 7% (as calcium hydroxide).

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Restricted substance— Annex III, EU Regulation 1223/2009
Max conc.: (a) 7% (as calcium hydroxide)
Entry: 15c

Record details

Maximum concentration

(a) 7% (as calcium hydroxide)

Product type

Hair straighteners containing two components: calcium hydroxide and a guanidine salt PH ajuster for depilatories Other uses (e.g. pH adjuster, processing aid)

Other restrictions

(b) pH < 12.7
(c) pH < 11

Warnings

(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

INCI glossary name

CALCIUM HYDROXIDE

Chemical name

Calcium hydroxide

Regulatory information

Regulation

(EC) 2009/1223

SCCS opinions

Identified ingredients

Key data

CAS
1305-62-0
EC
215-137-3
Annex
III
Entry number
15c

Inventory links for CALCIUM HYDROXIDE

Direct matches are limited for this record, so nearby entries from Annex III are shown as well.

Annex III 16
Nearby record in the same annex

1-NAPHTHOL

CAS: 90-15-3
EC: 201-969-4
Annex III 16
Nearby record in the same annex

1-Naphthol

CAS: 90-15-3
EC: 201-969-4
Annex III 14
Nearby record in the same annex

HYDROQUINONE

CAS: 123-31-9
EC: 204-617-8
Annex III 17
Nearby record in the same annex

SODIUM NITRITE

CAS: 7632-00-0
EC: 231-555-9
Annex III 18
Nearby record in the same annex

NITROMETHANE

CAS: 75-52-5
EC: 200-876-6
Annex III 11
Nearby record in the same annex

DICHLOROPHEN

CAS: 97-23-4
EC: 202-567-1
Annex III 21
Nearby record in the same annex

QUININE

CAS: 130-95-0
EC: 205-003-2

What Annex III means for CALCIUM HYDROXIDE

CALCIUM HYDROXIDE is a restricted substance under Annex III of EU Cosmetics Regulation 1223/2009. Its use in cosmetics is only permitted under the specific conditions set out in the entry above, including applicable concentration limits, product type restrictions and required warning statements.

When including this substance in a formulation, all conditions — maximum concentration, product scope and warning labels — must be met simultaneously. Compliance with one condition does not override the others.

This record is linked to 1 CosIng inventory ingredient for name and identifier cross-reference. The page also surfaces 11 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Ensure formulation concentration does not exceed: (a) 7% (as calcium hydroxide)
  • Confirm product type compatibility: (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)
  • Include required warning statement on product label.
  • Document conditions of use in the Product Information File (PIF).

Frequently asked questions

CALCIUM HYDROXIDE is listed in Annex III of EU Regulation 1223/2009 as a restricted substance. It may only be used under the conditions specified in the entry, including any maximum concentration, product type limitation and required warning statements shown above.

CAS 1305-62-0 is the unique numerical identifier assigned to CALCIUM HYDROXIDE by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

The maximum concentration of (a) 7% (as calcium hydroxide) applies to the concentration of the substance in the ready-to-use cosmetic product. When the substance is supplied as part of a blend or mixture, the calculation must account for the contribution of all sources in the formulation. The combined concentration must not exceed the stated limit.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
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Source note for Annex III record CALCIUM HYDROXIDE

This page summarizes one Annex III record for CALCIUM HYDROXIDE from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex III conditions for CALCIUM HYDROXIDE, but confirm any final regulatory decision against the current official annex wording and source files.

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