The invention relates to a process for dyeing and/or lightening keratin materials, in particular keratin fibres, preferably human keratin fibres such as the hair, using at least one fluorescent direct dye bearing a disulfide, thiol or protected-thiol function and comprising at least one aliphatic chain of formula (I). The invention also relates to the use i) of at least one fluorescent direct dye bearing a disulfide, thiol or protected-thiol function (I) combined with ii) steam and/or a heating iron for straightening keratin fibres, for dyeing and lightening keratin materials, and to novel fluorescent direct dyes bearing a disulfide, thiol or protected-thiol function of formula (I), and also a cosmetic composition comprising same.

The process used and the use of the thiol, protected-thiol or disulfide fluorescent direct dyes of formula (I) combined with steam makes it possible especially to obtain long-lasting colouring with care valency on keratin materials.

The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, using one or more particular 2-azo(benz)imidazolium dyes and one or more 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 fibres, especially human keratin fibres such as the hair, in chestnut-brown, dark chestnut-brown, brown, brown with a glint, or even black, without using an additional dye other than those defined above.

The present invention provides a method for easily and simply producing a zinc oxide phosphor that has a high level of safety and a high emission intensity and is useful for, for example, cosmetic applications. The present invention also provides a zinc oxide phosphor having such excellent physical properties and a cosmetic product containing the same. Provided is a method for producing a zinc oxide phosphor, including: a raw material mixing step of mixing an oxygen-containing zinc compound and a sulfur-containing compound; and a firing step of firing the raw material mixture obtained in the raw material mixing step, the firing step including firing in a reducing atmosphere followed by firing in an oxygen-containing atmosphere.

The present invention provides a cosmetic product capable of making the skin look youthful and producing a natural three-dimensional appearance. The present invention relates to a cosmetic product including two or more phosphors each containing an inorganic compound, wherein the cosmetic product, upon excitation by excitation light having a wavelength of 365 nm, emits an emission spectrum having a fluorescence emission peak in each of the range of 400 to 530 nm and the range of 620 to 720 nm and having an I.sub.2/I.sub.1 of 1 to 30, where I.sub.1 is a maximum emission intensity in the range of 530 to 620 nm and I.sub.2 is a maximum peak intensity in the range of 620 to 720 nm.

An effect pigment includes a substrate; an outer layer disposed above the substrate; and particles disposed above the substrate and at least partially entrapped by the outer layer, the particles comprising quantum dots.

The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, using one or more particular triarylmethane dyes and one or more 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 fibres, especially human keratin fibres such as the hair, in chestnut-brown, dark chestnut-brown, brown, brown with a glint, or even black, without using an additional dye other than those defined above.

A method of quantitating of ions in the extracellular polymer substances area of a dental biofilm is an effective way of assessing efficacy of oral care compositions.

The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, using one or more particular azinium dyes and one or more 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 fibres, especially human keratin fibres such as the hair, in chestnut-brown, dark chestnut-brown, brown, brown with a glint, or even black, without using an additional dye other than those defined above.

The present disclosure provides biophotonic compositions comprising one or more photosynthetic organism-derived chromophores or a non-photosynthetic prokaryote-derived chromophores and methods useful in phototherapy. In particular, the biophotonic compositions and the methods of the present disclosure are useful for promoting wound healing and skin rejuvenation, as well as treating acne and various other skin disorders.

The present disclosure concerns a bleaching tablet comprising a tablet core and a tablet shell encasing the tablet core, wherein the bleaching tabletwith respect to its weightcontains

a) from about 10% to about 70% by weight of peroxodisulphate(s);
b) from about 1% to about 14% by weight of percarbonate(s);
c) from about 5% to about 15% by weight of disintegrant formed from cellulose-containing material, wherein the percarbonate or the percarbonates are contained in the tablet core. The present disclosure furthermore concerns a method for bleaching human hair.