Dentin Desensitizer Snap-n-Go Swab 36/box. One-step chairside procedure for treating and preventing dentinal hypersensitivity with a unique HEMA, Sodium Fluoride and Benzalkonium Chloride formula that acts in seconds to seal dentinal tubules. Snap-n-Go swabs are perfect for use to treat cervical sensitivity and provide immediate relief lasting up to 9 months. Box of 36 swabs. Box of 36 swabs