Abstract: There is provided a hair treatment applicator (1) for applying a hair treatment product to hair. The applicator comprises: a handle (2) comprising a first extremity and a second extremity; and a first retaining structure (3a) and a second retaining structure (3b) for receiving, retaining and spreading said hair treatment product, both retaining structures being connected to said handle. The first retaining structure and the second retaining structure are located at the first extremity and the second extremity, respectively, and the retaining structures are different from one another.

Abstract: A hydrate of an acid addition bis-salt of an anthranilic acid derivative is produced by a process which comprises: (a) combining, in any order, the anthranalic acid derivative, a pharmaceutically acceptable organic solvent, an excess of water and a pharmaceutically acceptable strong acid to form a mixture; (b) warming the mixture until a clear solution forms; (c) filtering the solution while it is warm, to yield a filtrate; and (d) recovering the hydrate as defined above from the filtrate. The hydrate has a defined number of moles of water of crystallisation and possesses better storage stability and dissolution characteristics than conventionally produced hydrates of such acid addition his-salts.