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Prolonged sun exposure must be avoided for four to six weeks prior to treatment, and tanning booths should be avoided altogether. Avoid electrolysis or any waxing or plucking for at least three weeks before treatment, and have your hairs shaved short yet still visible for maximum treatment effectiveness. During the laser hair removal procedure, the doctor presses a handheld laser instrument, with either a cooling tip or cooling gel, onto your skin. You will wear goggles to protect your eyes from accident exposure to the laser beam and may feel a slight stinging on your skin from the light. Your doctor may apply a topical anesthetic to minimize the effect.