Materials and methods for selectively increasing the diversity of the skin microbiota of a subject with an amenable skin condition are provided in disclosing methods for using compositions comprising a zinc compound, a biocompatible surfactant, and a lipid. Amenable skin conditions include healthy skin and skin exhibiting atopic dermatitis (with or without lesions), skin dysbiosis and/or acne.

The present patent application relates to a process for dyeing keratin fibers, in particular human keratin fibers such as the hair, comprising a step of applying to said keratin fibers one or more 7-amino-1,2,3,4-tetrahydroquinoline derivatives substituted in position 8, to dye compositions comprising such 7-amino-1,2,3,4-tetrahydroquinolines, and also to the devices using these compounds.

Disclosed is an antimicrobial composition comprising zinc pyrithione and habit modified crystals of zinc oxide preferably comprising entrapped particles of water soluble protein. The protein may be selected from at least one of sericin, bovine serum albumin, gelatin, egg-albumin, casein, zein, whey or lysozyme. The composition may be used for personal cleansing and is especially preferred to be delivered as a shampoo or hair conditioner.

Described herein is dosage of foam including from about 5 cm.sup.3 to about 70 cm.sup.3 of the foam. The foam includes from about 0.5 g to about 4 g of a detersive surfactant; from about 0.001 g to about 4 g propellant; a foam density of from about 0.04 g/cm.sup.3 to about 0.23 g/cm.sup.3; and a bubble size distribution having an R.sub.32 of from about 30 m to about 60 m.

The present invention relates to a process for dyeing keratin fibers, in particular human keratin fibers such as the hair, using a) one or more blue, violet or green dyes and b) one or more disulfide, thiol or protected-thiol fluorescent dyes.

The present invention also relates to a cosmetic composition comprising the dyes defined above, and also to a multi-compartment device containing said dyes.

The present invention also relates to the use of said dyes for dyeing light keratin fibers, notably human keratin fibers such as the hair, in chestnut-brown, dark chestnut-brown, brown, brown with a tint, or even black, without using an additional dye other than those defined above.

The present invention, therefore, is directed to an antimicrobial compositions that decreases the bioavailability of iron by introducing a higher-affinity iron-selective chelating agent capable of competing with microbial siderophores. In one aspect, the present invention relates to an antimicrobial composition including a potentiating antimicrobial composition including one or more antimicrobial agents and a chelator having a weight ratio of the antimicrobial agent to the chelator from about 1:1000 to about 1000:1.

This invention relates to an antimicrobial composition, especially one which provides synergistic anti-dandruff efficacy. This is achieved through a judicious combination of anti-dandruff agent zinc pyrithione and a piperazine compound of specific type. These compositions can be delivered through very many different types of personal care products e.g. shampoo or conditioner.

The present invention relates to a process for dyeing and/or lightening keratin fibres, in particular human keratin fibres such as the hair, using b) one or more disulfide, thiol or protected-thiol fluorescent direct dyes and a) one or more direct dyes different from b).

The present invention also relates to a cosmetic composition comprising the dyes defined above, and also to a multi-compartment device containing said dyes.

The present invention also relates to the use of the dyes a) and b) for dyeing light or dark keratin fibres, without using an additional dye different from those defined above, for giving the fibres very chromatic, particularly visible colours.

The present invention relates to an aqueous cosmetic composition which is in the form of a flexible solid, comprising: from 25% to 70% by weight of one or more anionic surfactants and one or more types of non-hollow solid particles,
said composition comprising at least one anionic surfactant chosen from acylisethionates, preferably having an acyl group containing from 6 to 30 carbon atoms. Said composition is of preferential use as a composition for cleaning or washing keratin materials, in particular the hair. The invention also relates to a cosmetic treatment process, in particular for caring for, cleaning and/or conditioning keratin materials, using said composition.

The present invention is directed to a method for treating a hair disorder in a human or animal in need thereof, involving topically applying to the human or animal an effective amount of at least one 6-substituted 2-pyridinol N-oxide compound, a tautomer, or a cosmetically acceptable salt thereof wherein a hair count is increased by at least 0.5 hairs/cm.sup.2 and/or an increase the number of anagen hairs and maintain the number of telogen hairs when compared to a baseline and/or vehicle.