To prepare for laser hair removal, avoid sun exposure, tanning, waxing, depilatory creams, and plucking for 4 weeks beforehand, and shave the treatment area 12-24 hours before your appointment. Arrive with clean, product-free skin, and inform your provider about any medications or products you are using, especially those that increase sun sensitivity. Avoid products with retinoids, AHAs, or BHAs for a few days before the treatment, as they can increase skin sensitivity.