Lidocaine is a topical solution used to block the transmission of pain signals from the nerve endings in the skin to the brain, according to the Mayo Clinic. It can be used to treat the discomforts shingles, vaccines or even laser hair removal. There are multiple forms of lidocaine including creams, foams, gels, sprays or lotions. Lidocaine is a medical-strength drug and should be used under close medical supervision. Proper use of lidocaine can reduce or even eliminate the pain associated with laser hair removal, but improper use can result in serious health problems, or even death, according to the FDA.

Determine whether your laser hair removal technician will apply the solution before your scheduled appointment, or if you are to apply it yourself.

Apply the lidocaine solution to the area to be treated 20 to 30 minutes before your appointment. Spread a small layer across your skin. Avoid any areas of broken skin or irritation. If the laser hair removal facility applies the lidocaine for you, arrive at your appointment at least 30 to 40 minutes early, unless otherwise instructed.

Proceed with the laser treatment once the lidocaine has taken effect. This can occur as soon as 15 to 20 minutes after application, but it may take longer.