The Oral B Cross Action Brush Heads receive overwhelmingly positive feedback for their effectiveness in providing a thorough and refreshing clean. Users appreciate the color-changing bristles that serve as a helpful reminder to replace the brush head, enhancing oral hygiene habits. The brush heads are praised for being firm yet gentle on teeth, with a design that reaches difficult areas for a deep clean. Many highlight the noticeable improvement in cleanliness and freshness after use. Overall, customers are highly satisfied with the product’s functionality and performance.