CALCIUM HYDROXIDE

Q: Is CALCIUM HYDROXIDE banned in any country?

CALCIUM HYDROXIDE is not banned in any of the 26 markets tracked by Formpli. However, it may be subject to restrictions or conditions of use in some markets.

Q: What are the restrictions on CALCIUM HYDROXIDE in cosmetics?

CALCIUM HYDROXIDE is restricted or has conditions of use in UAE, Armenia, Bahrain, Brazil, Belarus, European Union, Indonesia, Kyrgyzstan, South Korea, Kuwait, Kazakhstan, Malaysia, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, Thailand, Taiwan, United Kingdom, Vietnam. Restrictions may include maximum concentration limits, product type limitations, or mandatory labeling requirements. See the detailed regulations above for specifics.

Q: Can I use CALCIUM HYDROXIDE in cosmetics?

CALCIUM HYDROXIDE is regulated in 22 markets. It has restrictions in UAE, Armenia, Bahrain, Brazil, Belarus, European Union, Indonesia, Kyrgyzstan, South Korea, Kuwait, Kazakhstan, Malaysia, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, Thailand, Taiwan, United Kingdom, Vietnam. Use Formpli's free screening tool to check your full ingredient list against all 26 markets at once.

RestrictedCAS 1305-62-024 regulations across 22 markets

CALCIUM HYDROXIDE is a cosmetic ingredient classified as Buffering. Also known as CAS 1305-62-0. It is regulated in 22 markets including UAE, Armenia, Bahrain.

Also Known As

CAS Number: 1305-62-0

Market Overview — 29 Markets

European Union1

United Kingdom3

United States

California

Maryland

Washington

Canada

Brazil1

South Korea1

Japan

Taiwan1

Australia

Singapore1

Malaysia1

Thailand1

Indonesia1

Vietnam1

Philippines1

UAE1

Saudi Arabia1

Qatar1

Oman1

Kuwait1

Bahrain1

Russia1

Belarus1

Kazakhstan1

Armenia1

Kyrgyzstan1

Detailed Regulations

Europe4 regulations

European UnionRestrictedAnnex III #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% (as calcium hydroxide)
Product type: (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)
Conditions of use: (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
Other conditions: (b) pH < 12.7 (c) pH < 11

Source: EC 1223/2009 Annex III

United KingdomRestrictedAnnex III #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a)7 % (as calcium hydroxide)
Product type: (a)Hair straighteners containing two components: calcium hydroxide and a guanidine salt
Conditions of use: Max: (a)7 % (as calcium hydroxide) (a)Contains alkaliAvoid contact with eyesKeep out of reach of childrenCan cause blindness

Source: UK retained EC 1223/2009 Annex III

United KingdomRestrictedAnnex III #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Product type: (b)pH adjuster for depilatories
Conditions of use: (b)Contains alkaliKeep out of reach of childrenAvoid contact with eyes
Other conditions: (b)pH < 12,7

Source: UK retained EC 1223/2009 Annex III

United KingdomRestrictedAnnex III #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Product type: (c)Other uses (e.g. pH adjuster, processing aid)
Other conditions: (c)pH < 11

Source: UK retained EC 1223/2009 Annex III

Americas1 regulation

BrazilRestrictedAnnex RDC_530 #81

Chemical name: Hidróxido de Cálcio
Max concentration: a) 7% em peso como hidróxido de cálcio. b) Até pH 12,7 c) Até pH 11
Product type: a) Alisante para cabelos contendo dois component es: hidróxido de cálcio e um sal de guanidina. b) Para ajuste de pH em depilatórios c) Outras aplicações (por exemplo, ajuste de pH, auxiliar no processo de fabricação de produtos)
Conditions of use: Application: a) Alisante para cabelos contendo dois component es: hidróxido de cálcio e um sal de guanidina. b) Para ajuste de pH em depilatórios c) Outras aplicações (por exemplo, ajuste de pH, auxiliar no processo de fabricação de produtos) | Warnings: a) - Contém álcali. - Evitar contato com os olhos. - Pode causar cegueira. - Manter fora do alcance das crianças. b) - Contém álcali. - Evitar o contato com os olhos. - Manter fora do alcance das crianças.

Source: ANVISA RDC 530

East Asia & Oceania2 regulations

South KoreaRestrictedAnnex restricted #M1288

Chemical name: Calcium Hydroxide
Conditions of use: * 배합한도 : ∙ 헤어스트레이트너 제품에 7% ∙ 제모제에서 pH조정 목적으로 사용되는 경우 최종 제품의 pH는 12.7이하 ∙ 기타 제품에는 사용금지

Source: MFDS Korea Cosmetics Regulation

TaiwanRestrictedAnnex Restricted Ingredients List #36

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a)7% (以calcium hydroxide計)
Product type: (a)Permanent wave agents contains calcium hydroxide and guanidine salt (b)Other uses as pH adjuster, processing aid
Conditions of use: (b)pH<11
Other conditions: (a)Contains alkali; Can cause blindness

Source: TFDA Cosmetics Regulations

ASEAN6 regulations

SingaporeRestrictedAnnex ACD Annex III (Restricted) #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% by weight calcium hydroxide
Product type: products only) (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt (b) pH adjuster - for depilatories (c) Other uses (eg. pH adjuster, processing aid)
Conditions of use: (b) pH < 12.7 (c) pH < 11 | Label: (a) • Contains alkali • Avoid contact with eyes • Can cause blindness • Keep out of reach of children (b) • Contains alkali • Keep out of reach of children • Avoid contact with eyes

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

MalaysiaRestrictedAnnex ACD Annex III (Restricted) #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% by weight calcium hydroxide
Product type: products only) (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt (b) pH adjuster - for depilatories (c) Other uses (eg. pH adjuster, processing aid)
Conditions of use: (b) pH < 12.7 (c) pH < 11 | Label: (a) • Contains alkali • Avoid contact with eyes • Can cause blindness • Keep out of reach of children (b) • Contains alkali • Keep out of reach of children • Avoid contact with eyes

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

ThailandRestrictedAnnex ACD Annex III (Restricted) #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% by weight calcium hydroxide
Product type: products only) (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt (b) pH adjuster - for depilatories (c) Other uses (eg. pH adjuster, processing aid)
Conditions of use: (b) pH < 12.7 (c) pH < 11 | Label: (a) • Contains alkali • Avoid contact with eyes • Can cause blindness • Keep out of reach of children (b) • Contains alkali • Keep out of reach of children • Avoid contact with eyes

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

IndonesiaRestrictedAnnex ACD Annex III (Restricted) #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% by weight calcium hydroxide
Product type: products only) (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt (b) pH adjuster - for depilatories (c) Other uses (eg. pH adjuster, processing aid)
Conditions of use: (b) pH < 12.7 (c) pH < 11 | Label: (a) • Contains alkali • Avoid contact with eyes • Can cause blindness • Keep out of reach of children (b) • Contains alkali • Keep out of reach of children • Avoid contact with eyes

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

VietnamRestrictedAnnex ACD Annex III (Restricted) #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% by weight calcium hydroxide
Product type: products only) (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt (b) pH adjuster - for depilatories (c) Other uses (eg. pH adjuster, processing aid)
Conditions of use: (b) pH < 12.7 (c) pH < 11 | Label: (a) • Contains alkali • Avoid contact with eyes • Can cause blindness • Keep out of reach of children (b) • Contains alkali • Keep out of reach of children • Avoid contact with eyes

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

PhilippinesRestrictedAnnex ACD Annex III (Restricted) #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% by weight calcium hydroxide
Product type: products only) (a) Hair straighteners containing two components: calcium hydroxide and a guanidine salt (b) pH adjuster - for depilatories (c) Other uses (eg. pH adjuster, processing aid)
Conditions of use: (b) pH < 12.7 (c) pH < 11 | Label: (a) • Contains alkali • Avoid contact with eyes • Can cause blindness • Keep out of reach of children (b) • Contains alkali • Keep out of reach of children • Avoid contact with eyes

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

GCC6 regulations

UAERestrictedAnnex III #15c

Chemical name: Calcium hydroxide
CAS: 1305-62-0
Max concentration: (a) 7% (as calcium hydroxide)
Product type: (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)
Conditions of use: (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
Other conditions: (b) pH < 12.7 (c) pH < 11