Menthol has a cooling effect that cancels out itch, but higher than a 1%-3% concentration could irritate. A gel, lotion, or spray with 5% lidocaine or 1% pramoxine can numb the area. Or replace the itch with the tingle of capsaicin, what gives chili peppers their heat. Start with a 0.025% concentration. For a double whammy, apply lidocaine, wait 20 minutes, then top with capsaicin. Pro tip: Store your topicals in the fridge.