Buxom Power Line Plumping Lip Liner Review! This lip liner retails for $18.00 dollars. Described on their website as a pigment-packed lip liner that provides ultra-precise results with a chiseled tip that never requires sharpening. The creamy, no-tug formula delivers comfortable, waterproof color that lasts for 8 hours to create fuller-looking lips that will not feather or bleed.