Abstract: An antibacterial personal care composition comprising at least one surfactant and at least one pH modifier said composition having a pH in the range of from 3.5 to 6.0. The composition further comprises at least one cationic polymer such that the composition is selectively active against transient bacteria relative to resident bacteria.

Abstract: A page printer uses alternative internal representations for the print data in each of multiple lateral strips that make up the page. Page description language input is converted to an intermediate display list format that is sorted into display commands associated with each strip. If during input the display list representation of the data fills the memory allotted to its storage, one or more of the strips is converted from display list format to raster format and compressed using a lossless compression algorithm. If storage of compressed strips subsequently exceeds available memory, raster data is further compressed using a lossy compression algorithm. Additional display list commands are rasterized by decompressing the compressed strips, processing the new commands and recompressing the data using lossless or lossy compression as required. If the display list does not overflow memory during input, the complete strips are rasterized and compressed one at a time in the order in which they will be printed.

Abstract: An oral hygiene composition comprises an effective amount of an antimicrobial agent in the form of a particulate non-ion-exchanging support material combined with a metal source providing antimicrobial metal ions in use. Preferably the antimicrobial agent is particulate titanium dioxide coated with silver chloride.