On 24 December 2025, the Thai Cosmetics Committee issued a series of new labeling regulations in rapid succession. These regulations focus on fluoride-containing toothpaste, tooth-whitening products, and warning label requirements for specific ingredients. The new rules will be implemented progressively over the coming months and up to two years, placing clear labeling compliance obligations on manufacturers, importers, and contract manufacturers.
The new labeling framework is designed to strengthen consumer right-to-know and product safety, particularly for products involving special functions or chemical ingredients, by establishing more stringent information disclosure standards.
Ⅰ Regulatory Updates
On 24 December 2025, the Royal Thai Government Gazette published five major notifications issued by the Cosmetics Committee on the same day. All of these announcements focus on detailed cosmetic labeling requirements, marking Thailand’s move toward more refined and transparent cosmetic regulation.
The clustered release of these notifications clearly signals regulatory intent: to systematically upgrade labeling standards for cosmetics—especially oral care products, tooth-whitening products, and products containing specific chemical substances.
The effective dates are not fully aligned:
- Most notifications took effect the day after publication (25 December 2025).
- One notification related to tooth-whitening products provides a 180-day grace period.
ⅡKey Regulatory Changes Explained
The core requirements differ by product category. Fluoride toothpaste and tooth-whitening products are now subject to mandatory disclosure of key information, and the ingredient warning list has been expanded, with particularly detailed requirements for fluoride compounds.
1. Fluoride Toothpaste: Mandatory “Contains Fluoride” and Exact Concentration
Under the Notification on Labeling of Fluoride Toothpaste, all fluoride toothpastes manufactured, imported, or contract-manufactured in Thailand must clearly state:
- Product nature: The label must state “Fluoride Toothpaste” or wording with equivalent meaning.
- Fluoride content: The total fluoride concentration, calculated as fluoride ion, must be declared in parts per million (ppm).
The unit may be shown as “ppm” or in Thai as “พีพีเอ็ม”.
Example statements:- “Fluoride content … ppm”
- “Total fluoride … ppm”
2. Tooth-Whitening Products Containing Hydrogen Peroxide: Mandatory Concentration Declaration
According to the Notification on Labeling of Dental Tooth-Whitening Cosmetics Containing Hydrogen Peroxide, for home-use dental-grade tooth-whitening products that have already obtained official notification approval, the label must clearly indicate the concentration of hydrogen peroxide contained in the product.
3. Expanded and Revised Warning Ingredient Lists, with Refined Fluoride Requirements
At the same time, the Cosmetics Committee issued three revised notifications updating the Warning Label Ingredient List. These updates introduce new substances and significantly refine warning requirements for fluoride compounds.
Ⅲ Refined Child-Specific Warning Labels for Oral Care Products
For fluoride-containing products such as toothpaste and mouthwash, warning statements are now strictly differentiated by children’s age groups, aiming to reduce the risk of excessive fluoride intake due to misuse.
For Toothpaste
- Children under 3 years:
Labels must state “use a very small amount,” e.g.- “Just enough to lightly wet the bristles”
- “Rice-grain size”
- Children aged 3 to under 6 years:
Labels must state “use a small amount,” e.g.- “Corn-kernel or pea-sized amount”
and must emphasize adult supervision during brushing.
- “Corn-kernel or pea-sized amount”
- General warning (mandatory for all fluoride toothpastes):
“If children receive fluoride from other sources (such as drinking water or supplements), consult a doctor or dentist.” - Ingredient declaration:
“Contains [specific ingredient name, e.g. sodium fluoride].”
For Mouthwash
- Prohibited use statement:
“Not to be used by children under 6 years of age.” - General warning:
“If children receive fluoride from other sources, consult a doctor or dentist.” - Ingredient declaration:
“Contains [specific ingredient name].”
Other Updates to the Warning List
- A new ingredient, Ammonium silver zinc aluminum silicate, has been added for use in foundations and deodorants.
Deodorants containing this ingredient must carry a warning label. - A new ingredient, Methyl-N-methylanthranilate, has been added.
No mandatory warning wording is currently specified, but its use is limited to leave-on and rinse-off products.
Ⅳ Compliance Focus and Transition Periods
Manufacturers must pay close attention to different effective dates and transition arrangements, as these directly affect the sale of existing inventory and the timeline for label changes.
Effective Dates
- Immediate effect (from 25 December 2025):
- Fluoride toothpaste labeling requirements
- Warning Ingredient List Version 9 (refined fluoride compound warnings)
- Warning Ingredient List Version 10 (revisions)
- Delayed effect:
- Labeling requirements for hydrogen peroxide tooth-whitening products take effect 180 days after publication, expected around mid-June 2026.
Key Transition Arrangements
- Fluoride toothpaste and refined fluoride compound warnings (Version 9):
Products manufactured and labeled before 25 December 2025 may continue to be sold for two years.
The final sell-through date for products with old labels is 23 December 2027.
Manufacturers should complete all label updates within this period. - Tooth-whitening products:
The notification does not explicitly specify a sell-through transition. Given the 180-day delayed enforcement, companies should ensure full compliance for all new products before the effective date and assess existing inventory accordingly.
Ⅳ Key Takeaways
Thailand’s rapid rollout of new cosmetic labeling regulations sends a clear regulatory signal:
greater transparency for functional ingredients and clear warnings for specific risks.
In particular, child safety in the use of fluoride-containing oral care products has been elevated to an unprecedented regulatory priority.