"This measure will amend Regulation (EC) No 1223/2009 (""the Cosmetic Regulation"") as it applies in Great Britain to lower the threshold for labelling requirements for formaldehyde releasing substances and prohibit the use of 3-(4-Methylbenzylidene)-d1 camphor/Enzacamene (4-MBC) in cosmetic products. The measure will also prohibit 16 new substances that have been classified as carcinogenic, mutagenic and reprotoxic (CMR) substances under Regulation (EC) No 1272/2008 (the GB Classification, Labelling and Packaging (CLP) Regulation).

The measure will come into force on 15/07/2026, other than the amendment to Annex 2, which adds the substances classified as CMRs under the GB CLP Regulation, which will come into force on 15/08/2026. 
The measure is subject to transitional arrangements. For cosmetic products containing 4-MBC and formaldehyde releasing substances, where a cosmetic product is placed on the market prior to 15/07/2026 and complies with the requirements of the Cosmetic Regulation as it has effect before 15/07/2026, it may continue to be made available on the market until 15/01/2027.
For a cosmetic product containing any of the CMR substances, where a cosmetic product is placed on the market before 15/08/2026, it may continue to be made available on the market until 15/02/2027.

Final date for comments: 30 December 2025"

Source
https://docs.wto.org/imrd/directdoc.asp?DDFDocuments/t/G/TBTN25/GBR107.DOCX
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Consumer News Tags
Department for Business and Trade; Office for Product Safety and Standards; Cosmetic Regulation; Formaldehyde releasing substances; 3-(4-Methylbenzylidene)-d1 camphor/Enzacamene (4-MBC)