Disclosed are methods of preparing thiol keratin-containing materials, comprising applying a mixture comprising one or more thiol compounds and a catalyst. Methods of preparing cross-linked keratin-containing materials by applying a mixture comprising one or more thiol compounds and an oxidizing agent are also disclosed. Methods of grafting monomeric and polymeric materials on keratin-containing materials to provide a covalent coating on keratin-containing materials are disclosed. A mixture comprising one or more thiol compounds is applied to the keratin-containing material sample. The keratin-containing material sample then comprises a plurality of free thiol groups. A monomer is optionally applied to the keratin-containing material sample to form a plurality of covalent bonds between the free thiol groups and the monomers. The disclosed grafting methods can be carried out with or without catalyst.

Disclosed are methods of preparing thiol keratin-containing materials, comprising applying a mixture comprising one or more thiol compounds and a catalyst. Methods of preparing cross-linked keratin-containing materials by applying a mixture comprising one or more thiol compounds and an oxidizing agent are also disclosed. Methods of grafting monomeric and polymeric materials on keratin-containing materials to provide a covalent coating on keratin-containing materials are disclosed. A mixture comprising one or more thiol compounds is applied to the keratin-containing material sample. The keratin-containing material sample then comprises a plurality of free thiol groups. A monomer is optionally applied to the keratin-containing material sample to form a plurality of covalent bonds between the free thiol groups and the monomers. The disclosed grafting methods can be carried out with or without catalyst.

Described herein is a disinfectant composition comprising a hydrogen peroxide source and a saponin source. An optional stabilizer, such as a metal chelator, and/or a solvent, such as water, may also be included in the compositions described herein. Also described are hand sanitizers and methods for sanitizing surfaces using the composition described herein.

A regimen and a pharmaceutical composition for the treatment of a skin condition and/or skin affliction are described. The regimen includes topically applying to the skin of a subject in need of such treatment a pharmaceutical composition comprising about 2.5% w/w to about 10% w/w benzoyl peroxide as an active ingredient, and a pharmaceutically acceptable carrier or excipient.

Described herein are compositions comprising (i) Isopropylcarbonate Benzoyl Peroxide, (ii) an opacifier, and (iii) and a preserving agent that have good physical, chemical and microbiological stability and corresponding methods of use.

Disclosed are low-level hydrogen peroxide aqueous-based disinfectant compositions that are substantially free of or do not contain volatile short chain (C1-C7) alcohols and exhibit broad spectrum antimicrobial/microbicidal activity against a variety of microorganisms including mycobacteria. Also disclosed are methods for using the compositions for the disinfection or sterilization of a variety hard surfaces such as those found in dental, hospital, and clinical environments or in food preparation environments.

Disclosed are low-level hydrogen peroxide aqueous-based disinfectant compositions that are substantially free of or do not contain volatile short chain (C1-C7) alcohols and exhibit broad spectrum antimicrobial/microbicidal activity against a variety of microorganisms including mycobacteria. Also disclosed are methods for using the compositions for the disinfection or sterilization of a variety hard surfaces such as those found in dental, hospital, and clinical environments or in food preparation environments.

Semisolid oral dispersions for whitening teeth. The semisolid oral dispersions include hydrophilic bleaching agent particles in a hydrophobic phase. The hydrophilic bleaching agent particles can include peroxide compounds and/or hydrogen peroxide adducts. The hydrophilic bleaching agent particle can have a solubility in water of at least about 20 parts, by weight of the particles, in about 100 parts, by weight, of water.

Semisolid oral dispersions for whitening teeth. The semisolid oral dispersions include hydrophilic bleaching agent particles in a hydrophobic phase. The hydrophilic bleaching agent particles can include peroxide compounds and/or hydrogen peroxide adducts. The hydrophilic bleaching agent particle can have a solubility in water of at least about 20 parts, by weight of the particles, in about 100 parts, by weight, of water.

An agent for dyeing keratin fibers comprises a composition A comprising at least one alkalizing agent, at least one oxidative dye precursor, at least one surfactant and at least one fatty substance free of carboxylic acid groups and a composition B comprising at least one oxidizing agent and at least one surfactant. The concentration of fatty substances free of carboxylic acid groups after mixing composition A and composition B is at least 20% by weight relative to the total weight of the mixed composition A and B. The concentration of alkalizing agent after mixing composition A and composition B is not more than 1.75% by weight relative to the total weight of the mixed composition A and B.