Living Proof Woiden Smoothing Boar Bristle Hair Brush. Size OS. New with tag! Nothing compares to the exceptional smoothing and shine-enhancing abilities of natural boar bristles. Detangle, smooth and boost shine with this beautiful, luxurious brush. Hair Type: Straight, Wavy Hair Density: Low, Medium, Thick Key benefits: •Natural boar bristles smooth hair to improve hair shine •Gentle daily hair care on wet or dry hair •Beautiful, unique design that is easy to hold