Curaprox Hydrosonic Black is White Carbon Whitening Brush Heads, 2 Pieces Activated Charcoal Electric Replacement Toothbrush Heads.

Ultra-fine Curen filaments coated with activated carbon for gentle daily whitening Specially developed for Curaprox sonic toothbrushes – perfect fit and performance Patented CURACURVE design ensures effortless reach, even behind molars Drop-shaped brush head cleans each tooth individually with precision Swiss-made quality with rubberised back for added comfort and control