Keep Your Brightest Smile Going Strong Your whitening journey doesn't stop after one kit—and neither should your results. This professional-strength whitening gel refill ensures you always have the power to maintain that radiant, confidence-boosting smile you've worked for. Why You Need This: 44% Carbamide Peroxide Formula – Professional-grade strength delivers visible whitening results Perfect Pairing – Designed to work seamlessly with your beaut. whitening kit for consistent, long-lasting brightness Never Run Out – Keep your smile routine uninterrupted with convenient refills on hand Cost-Effective Confidence – Extend the life of your whitening kit without repurchasing the entire system How to Use: Twist pen clockwise until gel reaches bristles (first use may require a few twists) Smile wide, keeping lips away from teeth Apply thin, even layer to each tooth Insert mouthguard, activate LED light Rinse after 15-minute session Active Ingredient: 44% Carbamide Peroxide