Currently, two major perforating diseases include reactive perforating collagenosis and elastosis perforans serpiginosa. In some literature, acquired perforating dermatosis is a third major group and is a catch-all term for cases of perforating disease arising in adults, usually associated with a systemic disease. Kyrle disease is characterised by the formation of large papules with central keratin plugs and is often associated with hepatic, renal or diabetic disorders.
Other glow products contain a small glass vial inside the plastic tube that contains a mixture of hydrogen peroxide in phthalic ester (a substance that is added to plastics to increase flexibility, durability and transparency). Outside of the glass vial is another chemical called phenyl oxalate ester.
In a word, yes. When you see your light necklace, bracelet, or toy gleaming, it's natural to wonder whether the technology involved is safe. Don't worry: glowsticks glow because of a harmless chemical reaction, not because of radioactive substances or heat. You can read all the details about what makes glowsticks glow at our page on How Glowsticks Work.