Beconfident presents the X1 refill for its teeth whitening system. This tooth whitening gel is designed specifically for use with the Teeth Whitening X1 Start Kit. Its advanced formula can brighten your smile by up to 4 shades within a mere 10 days, all while ensuring no adverse effects. The package comes complete with a color reference chart and easy-to-follow instructions. Key advantages include: • Guaranteed effectiveness. • No harmful ingredients like peroxide, parabens, TEA, or BPA. • Over 85% of the components are derived from natural sources. • Delightfully flavored with fresh melon.