Abstract: Cosmetic treatment method comprising the application of a composition comprising at least one antioxidant and a Bifidobacterium species lysate The present invention relates to a method for the cosmetic treatment of the scalp and the hair, comprising the application of a composition comprising at least one particular antioxidant, a Bifidobacterium species lysate and water. Preferably, the cosmetic treatment method of the invention is a method for caring for and/or for conditioning said scalp and hair.

Abstract: The present invention relates to a composition comprising a combination of an antioxidant, of a specific fatty acid ester, a Bifidobacterium species lysate and a yeast extract. The invention also relates to a method for the cosmetic treatment of keratin materials, in particular human keratin materials, such as the scalp and the hair, employing said composition. The present invention also relates to the non-therapeutic cosmetic use of said composition for maintaining, indeed even restoring, the balance of the microbial flora of the scalp. The invention additionally relates to a device comprising one or more containers which comprises (comprise) the composition according to the invention.

Abstract: The present invention relates to a composition for dyeing and/or lightening keratin fibres, in particular human keratin fibres such as the hair, comprising: a) one or more guanidine salts, b) one or more alkanolamines, c) ammonium hydroxide and d) at least two different polyols in a total content greater than or equal to 5% by weight relative to the total weight of the composition, and e) optionally one or more colouring agents. The invention also relates to a dyeing and/or lightening process using said composition, and also to a multi-compartment device which is suitable for using said dyeing and/or lightening composition.