METHOD FOR CONTROLLING AND LOWERING AMMONIA VAPOURS EMISSION FROM HAIR COLOURING OR DECOLOURING CREAMS

摘要

The present invention relates to a method for controlling the quantity of ammonia vapours emitted from the oxidation creams generally used for colouring the hair. Said method allows to reduce, at room temperature, the ammonia vapours which are emitted at the opening of the cream bottle or tube for the hair treatment, during the preparation of the colour, for the processing of the cream with hydrogen peroxide and during the application of the colour itself on the hair at values lower than the olfactory perception threshold.