The Shine Brush® only uses natural, unbleached Mongolian Boar® Bristle. The magic of Shine Brush® lies in the unique combination of 100% natural premium cut Mongolian Boar„¢ bristles, which are blended with our award-winning IntelliFlex® bristles. Wet Brush's famous IntelliFlex® bristles gently detangle your hair while the Mongolian Boar„¢ bristles add shine and remove impurities. This magical combination will help boost your scalp's circulation and spread your hair's natural oils from root to tip leaving you with longer, thicker, smoother and healthier hair. Use the Shine Brush® to keep your hair beautiful in between washes.