Soft bristle brush replacements for the Apa Beauty White Sonic Toothbrush. The Soft Bristle Brush is specially designed to help remove plaque and optimize cleaning while being gentle on gums. When used with the White Sonic Toothbrush, its the ultimate experience in oral hygiene. - Contains 2 premium soft bristle brush heads. . - Refills designed for the Apa Clean White Sonic Toothbrush. .