Abstract
A typical synthetic resin thickener comprise of a crosslinked polyacrylic acid. It is generally prepared by crosslinking polyacrylic acid with allyl saccharose. This carboxyvinyl polymer is one of the most popular thickeners for cosmetics. It shows high ability of gelation, good transparency and pleasant odor. Since this carboxy-vinylpolymer structure is anionic, it can be blended with nonionic and anionic polymers. However it is incompatible with cationic and amphoteric polymers. This is a disadvantage since cationic and amphoteric polymers yield good textile, setting and water repulsion properties of hair respectively. Therefore, we carried research towards development of a new thickener compatible with both cationic and amphoteric polymers. As a result, we developed a new cationic polymer which is compatible with cationic and amphoteric polymers. Furthermore, it exhibits good thickening properties and high salt tolerance. This new cationic polymer is not only good thickener but also yields excellent adhesive and setting properties of hair. Styling gel formulation with this new cationic polymer, yielded a stable product without stickiness, flaking and excellent transparancy on hair.
