The #1 daily hair care brush just got a big brother. To complement the Original Smart Sensation, we are pleased to introduce the XL. The XL is a wider version with 10 rows containing 199 uniquely placed ball-tipped teeth. These extra rows containing a total of 54% more teeth creates more gentle, stimulating contact to the skin and hair with each stroke to stimulate the natural oils from the skin to coat the hair and promote healthy hair growth. The XL amplifies the volume of the hair as it lifts it up from the hide without causing curls, kinks or matting that are often associated with rice root or massage brushes.