THIANTHOL
Official label name (INCI name, EU glossary of cosmetic ingredient names), No 28746
- No specific rule in the Cosmetics Regulation
THIANTHOL: no specific rule of the EU Cosmetics Regulation names it. It is neither prohibited nor restricted there, and it is on none of its lists of colorants, preservatives or UV filters.
In plain words
What it is used for
Functions declared by manufacturers:
Antimicrobial: helps control the growth of micro-organisms on the skin.
Skin conditioning: maintains the skin in good condition.
What the rules say
No EU rule targets this ingredient specifically. It remains subject to the general rule: every product must undergo a safety assessment before it is sold (Article 10 of Regulation (EC) No 1223/2009), under the manufacturer's responsibility.
The text of the annexes
No specific rule of the EU Cosmetics Regulation names this ingredient: it is on none of its lists (prohibited, restricted, colorants, preservatives, UV filters). It may be used under the responsibility of the manufacturer, who must ensure the product is safe.
Identity
- CosIng identifier
- 60298
- CAS (according to CosIng)
- 135-58-0
- EC (according to CosIng)
- 205-202-4
- Declared functions
- Antimicrobial, Skin conditioning
Elsewhere in the world
Information on other jurisdictions. What is covered, and what is not yet.
United Kingdom (Great Britain)
- No specific rule in the Cosmetics Regulation
Switzerland
Regulation (EC) No 1223/2009 applies in Switzerland (Article 54 of the Ordinance on Foodstuffs and Utility Articles).
United States, federal rules
None of the integrated sections of the federal code (21 CFR 700.11 to 700.27 and 250.250) targets this name. The FDA does not publish a list of allowed ingredients.
Japan
- Allowed under conditions: チアントール (Thianthol)
Annex 3-2 (allowed preservatives), entry 19, page 8.
Conditions, source text, in Japanese
[sous-liste] 2 化粧品の種類により配合の制限がある成分(注1) | 100g中の最大配合量（ｇ） / 粘膜に使用されることがない化粧品のうち洗い流すもの: 0.80 | 100g中の最大配合量（ｇ） / 粘膜に使用されることがない化粧品のうち洗い流さないもの: 0.80 | 100g中の最大配合量（ｇ） / 粘膜に使用されることがある化粧品: | (注1) 空欄は、配合してはならないことを示し、○印は、配合の上限がないことを示す。
Glossary: Commission Implementing Decision (EU) 2025/1175. Page updated on 21 October 2026.