2% strength lidocaine helps relieve pain from minor cuts, scrapes and burns.. Burn Jel also has tea tree oil (melaleuca alternifolia) which is believed to be antibacterial.. Ideal for a small first aid kit, this six-pack dispenser box is well suited for compact first aid needs.. Each packet contains 3.5 grams of lidocaine gel.. Shelf life: 3 years from date of manufacture.