1. A composition means a dentifrice comprising (i) a bleaching complex comprising crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, wherein said whitening complex contains about 10-30% by weight. hydrogen peroxide and about 5-15 wt%. total nitrogen, (ii) a block copolymer of ethylene oxide and propylene oxide with an average molecular weight above 5000 daltons, which is substantially free of a block copolymer of ethylene oxide and propylene oxide with an average molecular weight of less than 5000 Da.2. . The composition according to claim 1, wherein said block copolymer of ethylene oxide and propylene oxide comprising (ethylene) - (propylene oxide), wherein x represents an integer of 80-150, and y represents an integer of 30-80.3. Composition according to Claim. 1 or 2, wherein the total amount of hydrogen peroxide in the weight of the composition is 0.5-3% .4. Composition according to Claim. 1 further comprising polyethylene glycol with an average molecular weight of from 400 to 800 Da.5. Composition according to Claim. 1, which contains less than 3% vody.6. Composition according to Claim. 1 which is a toothpaste containing calcium abrasive is selected from calcium phosphate salts and carbonate kaltsiya.7. A composition according to claim. 6, wherein said abrasive comprises calcium pyrophosphate kaltsiya.8. Composition according to claim 7, comprising the following ingredients: wt%.. 9. Composition according to Claim. 1, which is a non-abrasive gel zubami.10 care agent. A composition according to claim. 9 comprising the additional linear and / or crosslinked polivinilpirrolidon.11. A composition according to claim 9, comprising the following ingredients mos.%:. 12. Composition according to claim. 11 wherein said further linear and / or crosslinked polivinilpirro1. Композиция средства для ухода за зубами, включающая (i) отбеливающий комплекс, содержащий поперечно-сшитый поливинилпирролидон в комплексе с пероксидом водорода, где указанный отбеливающи
