Disclosed is an antidandruff composition comprising synergistic combination of itaconic acid or an ester thereof and a benzoic acid or a salt thereof in specific ratio ranges. The composition may be used for personal cleansing and is especially preferred to be delivered as a shampoo or hair conditioner.

The invention relates to a process for providing piroctone olamine granules having a target particle size range, comprising: a) Compressing piroctone olamine crystals to form a compactate; b) Milling the compactate to form bulk granules of piroctone olamine.

A composition comprising: (i) an antidandruff agent; (ii) a wax or a wax-like substance in which said antidandruff agent is soluble or dispersible, where melting point of said wax and said substance is 30° C. to 105° C. and where said substance is not a UV absorbing sunscreen; and, (iii) a cationic polymer having weight average molecular weight of 103 Da to 107 Da, where said composition is in the form of particles of particle size 0.1 to 1000 μm and where said wax-like substance is a C13 to 35 fatty alcohol; where said wax is at least one of beeswax, Chinese wax, lanolin, shellac wax, spermaceti, bayberry wax, candelilla wax, carnauba wax, castor wax, esparto wax, Japan wax, ouricury wax, rice bran wax, soy wax, tallow tree wax, ceresin wax, montan wax, ozocerite or peat wax.

A hair treatment composition comprising: a) a conditioning base comprising: i) a cationic conditioning surfactant having from 16 to 32 carbon atoms; ii) a fatty alcohol having from 8 to 22 carbon atoms; and b) from 0.1 to 10 wt % of metal pyrithiones and mixtures thereof; wherein the composition further comprises: (c) from 0.1 to 5 wt % of a diesterquat; and wherein the ratio of b) to c) is from 1:1 to 1:0.1, provides improved deposition of metal pyrithione on hair surfaces.

The present invention is directed to a personal care composition comprising a) azoxystrobin; b) a 2-pyridinol-N-oxide material wherein the ratio of a:b is from about 4:1 to about 1:50; wherein there is a synergistic anti-inflammatory/cellular stress activity.

A personal care composition comprises a personal care adjunct ingredient, an anti-dandruff agent, and cationic co-polymer disposed on an outer surface of the anti-dandruff agent. The cationic co-polymer has a viscosity of at least 0.09 poise and comprises monomers selected from the group consisting of acrylamide (“AAM”), dimethyl acrylamide (“DMAA”), acrylamidopropyl trimethylamonium chloride (“APTAC”), methacrylamidopropyl trimethylammonium chloride (“MAPTAC”), and combinations thereof.

The present invention relates to a composition comprising at least one oxazoline, such as OX100, for inhibiting the growth of Malassezia yeasts and/or for preventing and/or treating conditions caused by Malassezia yeasts, seborrheic dermatitis, cradle cap, Malassezia folliculitis, dandruff, Pityriasis versicolor or Pityriasis capitis. The present invention also relates to a composition comprising at least one oxazoline such as OX100, at least one compound such as malic acid diester and a vegetable oil oleodistillate and/or arabinogalactan, and to the use of same for preventing and/or treating, in particular, affections caused by Malassezia yeasts, seborrheic dermatitis, cradle cap, Malassezia folliculitis, dandruff, Pityriasis versicolor or Pityriasis capitis.

An aqueous anti-dandruff shampoo composition which comprises: (I) a cleansing surfactant selected from the group consisting of anionic surfactant, zwitterionic or amphoteric surfactant and nonionic surfactant; (II) suspended particles of an anti-dandruff agent, (III) an anti-settling, thickening polymer, wherein the anti-settling, thickening polymer, comprises: (a) 40 to 74.5 wt % of structural units of C.sub.1-4 alkyl acrylate; (b) 20 to 50 wt % of structural units of methacrylic acid; (c) 0.2 to <5 wt % of structural units of 2-acrylamido-2-methylpropane sulfonic acid (AMPS); (d) 5 to 25 wt % of structural units of a specialized associated monomer having the following structure wherein R.sup.1 is a linear saturated C.sub.10-24 alkyl group; wherein R.sup.2 is a hydrogen or a methyl group (preferably, wherein R.sup.2 is a methyl group); and wherein n is an average of 20 to 28; with the proviso that the structural units of the specialized associated monomer (d) are derived from one of (i) a single specialized associated monomer (preferably, a single specialized associated monomer wherein R.sup.1 is selected from the group consisting of a linear saturated C.sub.12 alkyl group, a linear saturated C.sub.18 alkyl group and a linear saturated C.sub.22 alkyl group; more preferably, a single specialized associated monomer wherein R 1 is selected from the group consisting of a linear saturated C12 alkyl group and a linear saturated C18 alkyl group); (ii) two specialized associated monomers, wherein R.sup.1 is, respectively, a linear saturated C.sub.12 and a linear saturated C.sub.18 alkyl group; or (iii) two specialized associated monomers, wherein R.sup.1 is, respectively, a linear saturated C.sub.18 alkyl group and a linear saturated C.sub.22 alkyl group; (e) 0 to 1 wt % of structural units of acrylic acid; and (f) 0 to 2 wt % of structural units of multi-ethylenically unsaturated crosslinking monomer or chain transfer agent; and wherein the sum of the weight percentages of structural units (a)-(f) is equal to 100 wt % of the anti-settling, thickening polymer; and the use of such a composition in a method of treating hair or scalp. ##STR00001##

Disclosed is a hair care composition comprising a compound of the formula (1) and a photolabile antidandruff agent wherein said photolabile antidandruff agent is piroctone olamine The compound of formula (1), which is a 2(1H)-pyridinone, may be a degradation product of piroctone olamine on exposure to UV radiation and has been shown to improve the stability of piroctone olamine

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Disclosed is a novel compound and a process of preparing it. It has been shown to have anti-inflammatory activity and can be utilised in a wide range of cosmetic compositions. The compound is a 2(1H)-pyridinone of formula (1) in amide or enol form. It may be prepared by exposing a solution of piroctone olamine in an organic solvent or in water comprising at least one surfactant to UV radiation to degrade the piroctone olamine. The compound of formula (1) is separated from the degradation products by chromatography.

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