Palm says the causes are still not entirely understood. Although there are some potential triggers. Those include excessive scalp sweating, the use of some hair products or a history of acne.
"Avoid applying products with excess oil and make sure to wash your scalp regularly," advises Dr. Iris Rubin, board certified dermatologist and founder of SEEN, a line of hair products for acne-prone skin. "Also make sure your hair products are noncomedogenic. It turns out hair care products can leave a residue, or an invisible film on your scalp, which has the potential to clog pores and cause acne or breakouts."
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If you're dealing with a mild to moderate case of scalp acne, you may want to try some over-the-counter options. Using skin-friendly hair formulations can help maintain a healthy scalp. Palm's top choice for a medicated shampoo? DHS SAL Shampoo, $9.60. It contains salicylic acid to gently exfoliate your scalp and improve clarity.
Or opt for an anti-residue or chelating shampoo, especially if you use styling products. Neutrogena Anti-Residue Shampoo, $8.78, gently strips product buildup.
You can also do a pre-shampoo rinse like Sunday Riley Clean Rinse Clarifying Scalp Serum, $48. It's meant to be applied directly to your scalp via a handy narrow nozzle. It also contains rose clay, which acts as a mild astringent. You should also be mindful of which styling products you use. SEEN Blow-Out Creme, $24, provides heat protection, control and shine without clogging your pores.
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