ETHYL THIOGLYCOLATE
RestrictedCAS 623-51-819 regulations across 19 markets
ETHYL THIOGLYCOLATE is a cosmetic ingredient classified as Depilatory. Also known as CAS 623-51-8. It is regulated in 19 markets including UAE, Armenia, Bahrain.
Also Known As
- CAS Number
- 623-51-8
Market Overview — 29 Markets
European Union1
United Kingdom1
United States
California
Maryland
Washington
Canada
Brazil
South Korea
Japan
Taiwan
Australia
Singapore1
Malaysia1
Thailand1
Indonesia1
Vietnam1
Philippines1
UAE1
Saudi Arabia1
Qatar1
Oman1
Kuwait1
Bahrain1
Russia1
Belarus1
Kazakhstan1
Armenia1
Kyrgyzstan1
Detailed Regulations
Europe2 regulations
European UnionRestricted
- Chemical name
- Thioglycolic acid esters
- CAS
- 623-51-8
- Max concentration
- (a) 8% (b) 11% The abovementioned percentages are calculated as thioglycollic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Conditions of use: (a) (b) May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves Warnings: Contains thioglycolate Follow the instructions Keep out of reach of children (b) For professional use only
- Other conditions
- (a) General use ready for use pH 6 to 9.5 (b) Professional use ready for use pH 6 to 9.5
Source: EC 1223/2009 Annex III
United KingdomRestricted
- Chemical name
- Thioglycolic acid esters
- Max concentration
- (a)8 % (b)11 %The abovementioned percentages are calculated as thioglycolic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Max: (a)8 % (b)11 %The abovementioned percentages are calculated as thioglycolic acid Conditions of use:(a) (b)May cause sensitization in the event of skin contactAvoid contact with eyesIn the event of contact with eyes, rinse immediately with plenty of water and seek medical adviceWear suitable glovesWarnings:Contains thioglycolateFollow the instructionsKeep out of reach of children (b)For professional use only
- Other conditions
- General useready for use pH 6 to 9,5 Professional useready for use pH 6 to 9,5
Source: UK retained EC 1223/2009 Annex III
AmericasNo restrictions
No specific restrictions for ETHYL THIOGLYCOLATE in United States, California, Maryland, Washington, Canada, Brazil.
East Asia & OceaniaNo restrictions
No specific restrictions for ETHYL THIOGLYCOLATE in South Korea, Japan, Taiwan, Australia.
ASEAN6 regulations
SingaporeRestricted
- Chemical name
- Thioglycolic acid esters
- Max concentration
- 1. 8% ready for use at pH 6-9.5 2. 11% ready for use at pH 6-9.5 Percentages calculated as thioglycolic acid.
- Product type
- Hair waving or straightening products: 1. General use 2. Professional use
- Conditions of use
- The directions for use drawn up in the national or official language(s) must obligatorily incorporate the following sentences: • May cause sensitisation in the event of skin contact. • Avoid contact with eyes. • In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice. • Wear suitable gloves. | Label: 1. • Contains thioglycolate • Follow the instructions • Keep out of reach of children 2. • For professional use only • Contains thioglycolate • Follow the instructions • Keep out of reach of children
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
MalaysiaRestricted
- Chemical name
- Thioglycolic acid esters
- Max concentration
- 1. 8% ready for use at pH 6-9.5 2. 11% ready for use at pH 6-9.5 Percentages calculated as thioglycolic acid.
- Product type
- Hair waving or straightening products: 1. General use 2. Professional use
- Conditions of use
- The directions for use drawn up in the national or official language(s) must obligatorily incorporate the following sentences: • May cause sensitisation in the event of skin contact. • Avoid contact with eyes. • In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice. • Wear suitable gloves. | Label: 1. • Contains thioglycolate • Follow the instructions • Keep out of reach of children 2. • For professional use only • Contains thioglycolate • Follow the instructions • Keep out of reach of children
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
ThailandRestricted
- Chemical name
- Thioglycolic acid esters
- Max concentration
- 1. 8% ready for use at pH 6-9.5 2. 11% ready for use at pH 6-9.5 Percentages calculated as thioglycolic acid.
- Product type
- Hair waving or straightening products: 1. General use 2. Professional use
- Conditions of use
- The directions for use drawn up in the national or official language(s) must obligatorily incorporate the following sentences: • May cause sensitisation in the event of skin contact. • Avoid contact with eyes. • In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice. • Wear suitable gloves. | Label: 1. • Contains thioglycolate • Follow the instructions • Keep out of reach of children 2. • For professional use only • Contains thioglycolate • Follow the instructions • Keep out of reach of children
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
IndonesiaRestricted
- Chemical name
- Thioglycolic acid esters
- Max concentration
- 1. 8% ready for use at pH 6-9.5 2. 11% ready for use at pH 6-9.5 Percentages calculated as thioglycolic acid.
- Product type
- Hair waving or straightening products: 1. General use 2. Professional use
- Conditions of use
- The directions for use drawn up in the national or official language(s) must obligatorily incorporate the following sentences: • May cause sensitisation in the event of skin contact. • Avoid contact with eyes. • In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice. • Wear suitable gloves. | Label: 1. • Contains thioglycolate • Follow the instructions • Keep out of reach of children 2. • For professional use only • Contains thioglycolate • Follow the instructions • Keep out of reach of children
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
VietnamRestricted
- Chemical name
- Thioglycolic acid esters
- Max concentration
- 1. 8% ready for use at pH 6-9.5 2. 11% ready for use at pH 6-9.5 Percentages calculated as thioglycolic acid.
- Product type
- Hair waving or straightening products: 1. General use 2. Professional use
- Conditions of use
- The directions for use drawn up in the national or official language(s) must obligatorily incorporate the following sentences: • May cause sensitisation in the event of skin contact. • Avoid contact with eyes. • In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice. • Wear suitable gloves. | Label: 1. • Contains thioglycolate • Follow the instructions • Keep out of reach of children 2. • For professional use only • Contains thioglycolate • Follow the instructions • Keep out of reach of children
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
PhilippinesRestricted
- Chemical name
- Thioglycolic acid esters
- Max concentration
- 1. 8% ready for use at pH 6-9.5 2. 11% ready for use at pH 6-9.5 Percentages calculated as thioglycolic acid.
- Product type
- Hair waving or straightening products: 1. General use 2. Professional use
- Conditions of use
- The directions for use drawn up in the national or official language(s) must obligatorily incorporate the following sentences: • May cause sensitisation in the event of skin contact. • Avoid contact with eyes. • In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice. • Wear suitable gloves. | Label: 1. • Contains thioglycolate • Follow the instructions • Keep out of reach of children 2. • For professional use only • Contains thioglycolate • Follow the instructions • Keep out of reach of children
Source: ASEAN Cosmetic Directive (HSA Dec 2025)
GCC6 regulations
UAERestricted
- Chemical name
- Thioglycolic acid esters
- CAS
- 623-51-8
- Max concentration
- (a) 8% (b) 11% The abovementioned percentages are calculated as thioglycollic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Conditions of use: (a) (b) May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves Warnings: Contains thioglycolate Follow the instructions Keep out of reach of children (b) For professional use only
- Other conditions
- (a) General use ready for use pH 6 to 9.5 (b) Professional use ready for use pH 6 to 9.5
Source: GSO 1943:2024 (based on EU 1223/2009 III)
Saudi ArabiaRestricted
- Chemical name
- Thioglycolic acid esters
- CAS
- 623-51-8
- Max concentration
- (a) 8% (b) 11% The abovementioned percentages are calculated as thioglycollic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Conditions of use: (a) (b) May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves Warnings: Contains thioglycolate Follow the instructions Keep out of reach of children (b) For professional use only
- Other conditions
- (a) General use ready for use pH 6 to 9.5 (b) Professional use ready for use pH 6 to 9.5
Source: GSO 1943:2024 (based on EU 1223/2009 III)
QatarRestricted
- Chemical name
- Thioglycolic acid esters
- CAS
- 623-51-8
- Max concentration
- (a) 8% (b) 11% The abovementioned percentages are calculated as thioglycollic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Conditions of use: (a) (b) May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves Warnings: Contains thioglycolate Follow the instructions Keep out of reach of children (b) For professional use only
- Other conditions
- (a) General use ready for use pH 6 to 9.5 (b) Professional use ready for use pH 6 to 9.5
Source: GSO 1943:2024 (based on EU 1223/2009 III)
OmanRestricted
- Chemical name
- Thioglycolic acid esters
- CAS
- 623-51-8
- Max concentration
- (a) 8% (b) 11% The abovementioned percentages are calculated as thioglycollic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Conditions of use: (a) (b) May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves Warnings: Contains thioglycolate Follow the instructions Keep out of reach of children (b) For professional use only
- Other conditions
- (a) General use ready for use pH 6 to 9.5 (b) Professional use ready for use pH 6 to 9.5
Source: GSO 1943:2024 (based on EU 1223/2009 III)
KuwaitRestricted
- Chemical name
- Thioglycolic acid esters
- CAS
- 623-51-8
- Max concentration
- (a) 8% (b) 11% The abovementioned percentages are calculated as thioglycollic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Conditions of use: (a) (b) May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves Warnings: Contains thioglycolate Follow the instructions Keep out of reach of children (b) For professional use only
- Other conditions
- (a) General use ready for use pH 6 to 9.5 (b) Professional use ready for use pH 6 to 9.5
Source: GSO 1943:2024 (based on EU 1223/2009 III)
BahrainRestricted
- Chemical name
- Thioglycolic acid esters
- CAS
- 623-51-8
- Max concentration
- (a) 8% (b) 11% The abovementioned percentages are calculated as thioglycollic acid
- Product type
- Hair waving or straightening products
- Conditions of use
- Conditions of use: (a) (b) May cause sensitization in the event of skin contact Avoid contact with eyes In the event of contact with eyes, rinse immediately with plenty of water and seek medical advice Wear suitable gloves Warnings: Contains thioglycolate Follow the instructions Keep out of reach of children (b) For professional use only
- Other conditions
- (a) General use ready for use pH 6 to 9.5 (b) Professional use ready for use pH 6 to 9.5
Source: GSO 1943:2024 (based on EU 1223/2009 III)
EAEU5 regulations
RussiaRestricted
- Chemical name
- Эфиры тиогликолевой кислоты (Thioglycolic acid esters)
- Max concentration
- (d) 8 процентов (b) 11 процентов в пересчете на тиогликолевую кислоту
- Product type
- Продукция для завивки или выпрямления волос
- Conditions of use
- Условия применения: (a) (b) Может вызвать раздражение при попадании на кожу. Избегать попадания в глаза. В случае попадания в глаза немедленно промыть большим количеством воды и обратиться к врачу. Использовать перчатки. Предупреждения: Содержит тиогликолят. Следовать инструкции. Хранить в местах, недоступных для детей. (b) Только для профессионального применения.
- Other conditions
- Общее применение в готовой продукции, pH 6 - 9,5 Профессиональное применение в готовой продукции pH 6 - 9,5
Source: TR CU 009/2011 Annex 2 (Restricted Substances) (Ref 2b)
BelarusRestricted
- Chemical name
- Эфиры тиогликолевой кислоты (Thioglycolic acid esters)
- Max concentration
- (d) 8 процентов (b) 11 процентов в пересчете на тиогликолевую кислоту
- Product type
- Продукция для завивки или выпрямления волос
- Conditions of use
- Условия применения: (a) (b) Может вызвать раздражение при попадании на кожу. Избегать попадания в глаза. В случае попадания в глаза немедленно промыть большим количеством воды и обратиться к врачу. Использовать перчатки. Предупреждения: Содержит тиогликолят. Следовать инструкции. Хранить в местах, недоступных для детей. (b) Только для профессионального применения.
- Other conditions
- Общее применение в готовой продукции, pH 6 - 9,5 Профессиональное применение в готовой продукции pH 6 - 9,5
Source: TR CU 009/2011 Annex 2 (Restricted Substances) (Ref 2b)
KazakhstanRestricted
- Chemical name
- Эфиры тиогликолевой кислоты (Thioglycolic acid esters)
- Max concentration
- (d) 8 процентов (b) 11 процентов в пересчете на тиогликолевую кислоту
- Product type
- Продукция для завивки или выпрямления волос
- Conditions of use
- Условия применения: (a) (b) Может вызвать раздражение при попадании на кожу. Избегать попадания в глаза. В случае попадания в глаза немедленно промыть большим количеством воды и обратиться к врачу. Использовать перчатки. Предупреждения: Содержит тиогликолят. Следовать инструкции. Хранить в местах, недоступных для детей. (b) Только для профессионального применения.
- Other conditions
- Общее применение в готовой продукции, pH 6 - 9,5 Профессиональное применение в готовой продукции pH 6 - 9,5
Source: TR CU 009/2011 Annex 2 (Restricted Substances) (Ref 2b)
ArmeniaRestricted
- Chemical name
- Эфиры тиогликолевой кислоты (Thioglycolic acid esters)
- Max concentration
- (d) 8 процентов (b) 11 процентов в пересчете на тиогликолевую кислоту
- Product type
- Продукция для завивки или выпрямления волос
- Conditions of use
- Условия применения: (a) (b) Может вызвать раздражение при попадании на кожу. Избегать попадания в глаза. В случае попадания в глаза немедленно промыть большим количеством воды и обратиться к врачу. Использовать перчатки. Предупреждения: Содержит тиогликолят. Следовать инструкции. Хранить в местах, недоступных для детей. (b) Только для профессионального применения.
- Other conditions
- Общее применение в готовой продукции, pH 6 - 9,5 Профессиональное применение в готовой продукции pH 6 - 9,5
Source: TR CU 009/2011 Annex 2 (Restricted Substances) (Ref 2b)
KyrgyzstanRestricted
- Chemical name
- Эфиры тиогликолевой кислоты (Thioglycolic acid esters)
- Max concentration
- (d) 8 процентов (b) 11 процентов в пересчете на тиогликолевую кислоту
- Product type
- Продукция для завивки или выпрямления волос
- Conditions of use
- Условия применения: (a) (b) Может вызвать раздражение при попадании на кожу. Избегать попадания в глаза. В случае попадания в глаза немедленно промыть большим количеством воды и обратиться к врачу. Использовать перчатки. Предупреждения: Содержит тиогликолят. Следовать инструкции. Хранить в местах, недоступных для детей. (b) Только для профессионального применения.
- Other conditions
- Общее применение в готовой продукции, pH 6 - 9,5 Профессиональное применение в готовой продукции pH 6 - 9,5
Source: TR CU 009/2011 Annex 2 (Restricted Substances) (Ref 2b)
Frequently Asked Questions
Is ETHYL THIOGLYCOLATE banned in any country?
ETHYL THIOGLYCOLATE 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.
What are the restrictions on ETHYL THIOGLYCOLATE in cosmetics?
ETHYL THIOGLYCOLATE is restricted or has conditions of use in UAE, Armenia, Bahrain, Belarus, European Union, Indonesia, Kyrgyzstan, Kuwait, Kazakhstan, Malaysia, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, Thailand, United Kingdom, Vietnam. Restrictions may include maximum concentration limits, product type limitations, or mandatory labeling requirements. See the detailed regulations above for specifics.
Can I use ETHYL THIOGLYCOLATE in cosmetics?
ETHYL THIOGLYCOLATE is regulated in 19 markets. It has restrictions in UAE, Armenia, Bahrain, Belarus, European Union, Indonesia, Kyrgyzstan, Kuwait, Kazakhstan, Malaysia, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, Thailand, United Kingdom, Vietnam. Use Formpli's free screening tool to check your full ingredient list against all 26 markets at once.
Screen ETHYL THIOGLYCOLATE with your full formula
Paste your entire ingredient list and get a compliance report across 26 markets — free, no signup.
Check Ingredients FreeThis information is for reference only and does not constitute legal or regulatory advice. Regulations change — always verify with official sources and consult a regulatory specialist before exporting cosmetic products. Data sourced from EU COSING, US FDA, Health Canada, MHLW Japan, MFDS Korea, ASEAN ACD, GCC SFDA, TGA Australia, ANVISA Brazil, EAEU TR CU, and Taiwan TFDA.