White Birch Professional Teeth Whitening Serum - Activated White Charcoal You receive one White Birch Whitening Serum with Professional strength Teeth Whitening ingredients. While your brush your teeth our serum wipes away years of stains. Simple Brush + Go, Pro-Strength Formula. Developed by a family of dentists and a team of scientists, the White Birch Teeth Whitening Serum is a proprietary blend of professional-strength whitening agents combined with our exclusive White Birch Activated White Charcoal. Our safe and highly effective serum formula works with any toothpaste so you can conveniently whiten while performing your daily brushing routine. Simply apply the White Birch Teeth Whitening Serum with 1 pump on top of your toothpaste and brush for 2 minutes, twice a day. Use everyday for 2 weeks for a brightening solution. We recommend using White Birch Whitening Toothpaste 85% faster than White Strips. No Strips, No Trays. It works immediately to adsorb stains and whiten your teeth for a beautiful smile. This powerful whitening serum is formulated to safely brighten teeth 6 shades lighter* for a white glow, while freshening breath. *Results may vary. Whitening levels start on an average shade of A3, based on the Vita shade guide.