If you suffer from skin discoloration or brown spots on your scalp, you may have spent too much time in the sun and incurred sun damage. Hyperpigmentation, or the production of too much melanin---often due to sun damage---can cause age spots or brown spots on the skin. You have several options to lighten brown spots on your scalp; start with the least expensive or invasive method, and work your way up.
Avoid the sun on your scalp by wearing a hat whenever you go outside. Apply sunscreen throughout the day.
Apply a paste of one part honey to two parts lemon juice to the affected area to lighten brown age spots and freckles. Leave the paste on for 15 minutes, and use it every day for 15 days.
Gently exfoliate your skin with an over-the-counter microdermabrasion kit to slough away dead skin cells, including the brown spots. Purchase exfoliation and microdermabrasion skin masks in the health and beauty section of most stores.
Apply a fade cream or bleaching agent, such as hydroquinone, to lighten brown spots. Purchase hydroquinone over the counter at 2 percent strength, an adequate concentration to lighten moderately dark spots. Use the hydroquinone sparingly, and follow the directions on the bottle.
Undergo fractional laser skin resurfacing to remove the top layer of skin (including the brown spots), which allows the generation of collagen production to improve your skin's lower layers. During the treatment, the technician will apply a topical anesthetic gel to cool and lubricate your skin. You may feel warm prickling sensations during the procedure as the technician moves the light wand over your scalp. Your skin may become red and swollen after the procedure, although you can usually go to work the next day. Apply ice packs to your skin intermittently for the ensuing few hours to reduce your swelling and redness. Expect your skin to peel during the next week. Apply a moisturizer with a sunscreen to minimize the appearance of peeling.
Get a chemical peel to resurface and eliminate the brown patches on your scalp. To avoid excessive burns, find a qualified dermatologist or technician to perform this procedure. The skin on your scalp may completely peel and become very red and raw; you may need to take a couple of weeks off from work after undergoing a chemical peel.