Brushes that collapse when they encounter too much resistance in releasing tangles from hair are?

The correct choice is pneumatic brushes, which are designed with an air-filled cushion that collapses when encountering resistance. This feature allows the brush to flex and release tangles from hair gently, reducing the risk of breakage or pulling. The cushion helps the bristles to adapt to the hair's contours and glide over tangles without damaging the hair strands, making them particularly effective for detangling.

Pneumatic brushes are especially useful for various hair types, as they can accommodate both fine, delicate hair and thicker, coarser textures. This adaptability is critical in a hair care setting, as it promotes healthy hair practices.

Understanding this specific functionality is essential for recognizing the importance of choosing the right tools for hair management, especially in extension work where tangles can be more prevalent.