Fluid material, including medication, dermatological fluids, cream eye shadow and lip-coloring material such as lip gloss, is stored in a reservoir. Rotating a collar with respect to the reservoir advances a piston therein to deliver lip coloring or other material through a valve to a roller mounted on a dispensing head.

 
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> Dibenzoylmethane sunscreen compositions photostabilized with amphiphilic block copolymers

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