Scalp pimples or acne is less common than acne on the face or back, but it develops in the same way. Skin naturally produces oil known as sebum. The sebum makes its way to the skin's surface through pores, and excess oil, dead skin cells or other substances can clog them. Bacteria multiply in the trapped oil to form a pimple. Scalp acne or pimples are usually caused by a blockage in the pore.
Our Scalp Anti-Bacterial Formula / Scalp Fungus Treatment along with the Vinegar Rinse have been helpful.
Here is a link to them-