Keep your Quartz clean and looking brand new with 100% Pure Cotton Mops. This convenient 300-swab pack is perfect. High quality Quartz products and accessories can show oxidation even after first use. When vaping at low temperatures, it is natural for some residue to remain on your nail. Solve this problem using the "Q-tip Tech" by taking a Glob Mops brand bamboo cotton swab and absorbing the remaining residue from your Quartz nail immediately following.