A method of identifying or evaluating synergistic combinations of actives such as skin-care actives that improve the metabolism of a cell and provides an advantage over using the actives alone. The method includes contacting cells with test agents, alone and in combination, and determining a response of the cells to the test agent(s), wherein the response corresponds to a change in a metabolic indicator associated with glycolysis and a change in a metabolic indicator associated with oxidative phosphylation.

The present invention relates to a cosmetic process for treating keratin materials, in particular keratin fibers, preferably human keratin fibers such as the hair, using a) one or more direct dyes and b) one or more particular heterocyclic salts, to a composition comprising ingredients a) and b) and to a kit comprising a) and b).

The invention relates to an extract of the aerial parts of Lawsonia inermis, as well as its preparation method and the extract that can be obtained by said method. The invention also relates to a cosmetic dye composition comprising such an extract. The invention finally concerns a cosmetic method for dying keratin fibers comprising the application of such a composition.

Described are compositions containing quinones that show activity in enhance DNA repair and/or prevent damage to DNA and/or upregulate genes associated with wound healing. The quinones are thymoquinone, lapachol, myrtucommulone C, or mixtures thereof, and can be formulated into cosmetic compositions for topical administration to a subject in need thereof. The cosmetic compositions can also include sunscreens, surfactants, sunless tanning agents, desquamation agents, antiperspirants, colorants, preservatives and mixtures; and a cosmetically acceptable carrier. The compositions should find use in methods for treating the signs of ageing in mammals, dermatitis and wound healing via topical application to a site in need thereof, such as the skin or hair of the mammals or a wound site.

The present disclosure relates to a process for preparing a Lawsonia inermis extract which is rich in Lawsone. It also relates to the extract which may be obtained by said process and to a composition comprising thereof. The disclosure also relates to a method for dying fibers, in particular keratin fibers.

The present invention relates to a cosmetic process for treating keratin materials, in particular keratin fibers, preferably human keratin fibers such as the hair, using a) one or more direct dyes which are preferably neutral and b) one or more particular aliphatic ammonium salts, and to a composition comprising ingredients a) and b). The cosmetic process for treating keratin materials of the invention makes it possible to obtain a good color build-up up and, furthermore, the colors are vivid and chromatic.

The invention relates to a composition for dyeing and/or lightening human keratin fibers, preferably the hair, comprising: one or more anthraquinone cationic direct dyes, at least 25% of one or more fatty substances, one or more chemical oxidizing agents, one or more basifying agents and/or one or more oxidation dye precursors, preferably one or more oxidation dye precursors.

This invention relates to a hair care composition that contains at least one hair care ingredient and at least one polymeric colorant. The invention also relates to a method for coloring human head or facial hair comprising the following steps: (a) providing a hair care composition that contains at least one poly(alkyleneoxy) substituted chromophore colorant; (b) applying the hair care composition to hair; and (c) allowing the hair care composition to contact the hair for a period of time.

A method for stabilizing retinoic acid precursors and a skin benefit composition with stabilized retinoic acid precursors are described. The composition has a retinoic acid precursor and a resorcinol to impede oxidation of the precursor in situ in the composition.

A system for producing a customized skin care product in less than five minutes includes active ingredient premixes, premix dispensers respectively operable to dispense a predefined quantity of the active ingredient premixes by a single dispenser operation, skin care product bases, product base dispensers respectively operable to dispense a predefined quantity of the skin care product bases by a single dispenser operation, and instructions executable by a processor to receive data indicative of a customer's skin condition and generate a recipe for producing a customized skin care product containing specified percentages by weight of two or more active ingredients suited for the customer's skin condition. The recipe defines a number of operations of one or more of the premix dispensers and one of the product base dispensers. The system further includes a mixing machine operable to mix the contents of a closed container filled in accordance with the recipe.