(19)
(11) EP 4 739 273 A1

(12)

(43) Date of publication:
13.05.2026 Bulletin 2026/20

(21) Application number: 24739181.6

(22) Date of filing: 02.07.2024
(51) International Patent Classification (IPC): 
A61K 8/22(2006.01)
A61K 8/44(2006.01)
A61Q 5/10(2006.01)
 A61K 8/41(2006.01)
A61K 8/49(2006.01)
(52) Cooperative Patent Classification (CPC):
A61Q 5/10; A61K 8/49; A61K 8/411; A61K 8/22
(86) International application number:
PCT/EP2024/068591
(87) International publication number:
WO 2025/008343 (09.01.2025 Gazette 2025/02)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 05.07.2023 EP 23183698

(71) Applicant: Wella Germany GmbH
64295 Darmstadt (DE)

(72) Inventors:
  • CRNE, Matija
    64295 Darmstadt (DE)
  • MCKELVEY, Graham Neil
    64295 Darmstadt (DE)

(74) Representative: Ziebig Hengelhaupt Intellectual Property Attorneys Patentanwaltskanzlei PartGmbB 
Leipziger Straße 49
10117 Berlin
10117 Berlin (DE)

   


(54) OXIDATIVE HAIR COLOURING COMPOSITION CONTAINING TOLUENE-2,5-DIAMINE