Descripción del producto

PVP/VA Series are used as film formers & hair fixatives in cosmetics industry, particular used in hairsprays,hairgels,wavesteds,hair-setting lotions,Mouses.They play an important role as film-forming & hair-fixing agents,due to their variable hygroscopicity.If used with PVP K*0,their effect is enhanced. PVP/VA Series are used as film-forming agents and fixatives in hair care,they possess excellent properties both for aerosol sprys and for non-aerosol products.The higher the proportion of Vinylpyrrolidone,the more hygroscopic,the PVP/VA series is.The adhesion of PVP/VA films (xxxxx/VA *4 and VA*3) to the hair also increases with the proportion of vinylpyrrolidone, without adversely affecting their excellent combing-out and washing-out properties,thanks to the nonionic nature of the polymer. PVP/VA *3 and VA*5 grade are particularly suitable for hair sprays whose films it must be possible to remove from the hair by brushing,the hair is even degreased on brushing,as the grease is effectively removed together with the PVP film. PVP/VA *4 grades and the PVP/VA *5 grades,by contrastare preferable for hair sprays that are to have a particularly hydrophilic character,xxxxx for use in dry climates.They are also suitable for sprays with a high water conten.Hair sprays for dry and brittle hair should include a small quantity of plasticizer. Solutions of the PVP/VA series are readily compatible with dimethyl ether.Propane,butane, isobutene,pentane DME/pentane and DME/butane mixtures can be used together with solvents, such as ethanol and methylene chloride. Because of their good solubility in water,PVP/VA *4 and VA *3 grades are particulary suitable for liquid hair setting products,gels and mousses.Further,these polymers possess excellent setting properties.All the PVP/VA grades can be completely removed from the hair by straightforward washing. The easy-to use aqueous PVP/VA solutions (VA *4W & VA *3W) as well as PVP/VA *4 Powder are particularly suitable for alcohol-free formulations.In the usual concentrations,they form clear solutions in water and are very compatible with carbomers. The moderate hydrocarbon compatibility of PVP/VA*3 can be greatly improved by adding small quantities of water.This makes it possible to achieve cloud points below 0°C. The composition of hair sprays depends on a number of factors.These include the hair type (thick& thin,dry,greasy hair),the climate,legal requirements and the approval status of the various propellants and solvents,the solvents system and consumer habits. In the manufacture of hair sprys and hair setting lotions,it is worth filtering the solutiong before filling,to remove any particulate matter that can be present.