A must HAVE addition to every teeth whitening technician's kit - a DESENSITISING PEN! Sparkle By Maya use this product post treatment to restore the minerals lost during a teeth whitening session. Apply to your client's teeth after treatment, let sit for 5-15 minutes then rinse! These handy pens are a great addition to your aftercare packs or even to retail to your clients we recommend charging $20 for purchases.