What you put on scalp sores depends on what’s causing them, but most people get relief starting with an over-the-counter medicated shampoo or a gentle antiseptic. Scalp sores can stem from conditions like seborrheic dermatitis, psoriasis, folliculitis, or contact dermatitis, and each responds best to different active ingredients. Here’s a practical breakdown of what works and when to use it.
Start With Medicated Shampoos
For most scalp sores, especially those with flaking, redness, or itching, a medicated shampoo is the simplest first step. Look for one of these active ingredients:
- Salicylic acid (2-3%): Softens and lifts scaly, crusty buildup so the skin underneath can heal. It works well for psoriasis plaques and thick dandruff patches.
- Coal tar: Slows the rapid skin cell turnover that causes scaling. It has a strong smell but is effective for both psoriasis and seborrheic dermatitis.
- Zinc pyrithione: Targets the yeast that contributes to dandruff and seborrheic dermatitis. Gentle enough for regular use.
- Ketoconazole (1% shampoo): An antifungal that treats dandruff and seborrheic dermatitis. Use it every 3 to 4 days for up to 8 weeks, then only as needed.
Let the shampoo sit on your scalp for several minutes before rinsing. Just lathering and immediately washing it off won’t give the active ingredients time to work.
Topical Treatments for Specific Causes
Seborrheic Dermatitis
If your sores are accompanied by greasy, yellowish flakes, you’re likely dealing with seborrheic dermatitis. Beyond medicated shampoos, antifungal creams or foams applied directly to the affected area twice a day can clear it up. Foam formulations are typically used for about 4 weeks, while gel versions are applied once daily for 2 weeks. Over-the-counter hydrocortisone cream (1%) can calm the itching and redness in the short term, but avoid using it for more than a few days at a stretch since steroids thin the skin over time.
Scalp Psoriasis
Psoriasis sores look different from dandruff. The scales are thicker and drier, and the patches often extend past the hairline onto the forehead, behind the ears, or down the neck. You may also notice similar patches on your elbows, knees, or lower back, or small pits in your fingernails. Psoriasis is generally more stubborn to treat than seborrheic dermatitis.
Salicylic acid products help remove the scale so other treatments can reach the skin. For prescription-strength relief, corticosteroid scalp solutions (0.05% strength) are applied twice daily, morning and night. These are potent, so treatment is limited to 2 consecutive weeks and no more than 50 mL per week to avoid side effects. If topical treatments aren’t enough, light therapy is sometimes used as a next step.
Bacterial Infections and Folliculitis
Sores that are painful, warm to the touch, oozing, or producing a honey-colored crust are signs of a bacterial infection. Fever alongside scalp sores also points to infection. For mild cases, an over-the-counter antibiotic ointment like bacitracin can help. For more stubborn or spreading infections, prescription mupirocin ointment is more effective, particularly against staph bacteria. If your sores are centered around hair follicles (small red bumps that look like pimples), that’s folliculitis, and the same antibiotic approach applies.
Home Remedies That Can Help
If your sores are mild or you want to supplement other treatments, a few home remedies have some evidence behind them.
Tea tree oil has natural antifungal and anti-inflammatory properties. Never apply it undiluted, as it will irritate broken skin. Mix it with a carrier oil like coconut, almond, or sesame oil, aiming for roughly a 5% concentration (about 10 to 15 drops per ounce of carrier oil). Massage it into your dry scalp and leave it on for 15 to 20 minutes before washing. You can also add a few drops to your regular shampoo.
Apple cider vinegar rinses can help restore scalp pH and reduce itching. Dilute 2 to 4 tablespoons in 16 ounces of water and pour it over your scalp after shampooing, up to twice a week. Always dilute it first. Undiluted vinegar on open sores will burn and can cause further irritation.
Coconut oil on its own can soften crusty patches and provide a moisture barrier while skin heals. Apply a thin layer to dry, flaky areas and leave it on for at least 30 minutes before washing.
What Not to Put on Scalp Sores
Avoid anything with fragrances, alcohol, or harsh sulfates, especially if the skin is broken. These dry out the scalp and sting open sores. Hair dyes, bleach, and chemical straighteners should be paused until sores fully heal, since they can deepen the damage and delay recovery. Picking at scabs is equally counterproductive. It reintroduces bacteria, restarts the healing process, and can lead to scarring or hair loss in that area.
How to Tell If Your Sores Need Stronger Treatment
Most mild scalp sores improve within a couple of weeks with consistent topical care. If your sores are spreading, becoming more painful, producing pus or discharge, or not responding to over-the-counter products after two weeks, that’s a sign you need a stronger approach. Bacterial infections that cause fever or significant redness and warmth need professional evaluation, since oral antibiotics may be necessary. Similarly, thick psoriasis plaques that don’t budge with OTC salicylic acid often require prescription-strength corticosteroids or other targeted therapies.
Multiple conditions can occur on the same scalp at the same time. It’s common, for example, to have seborrheic dermatitis and a secondary bacterial infection from scratching. If you’re treating one condition and not seeing improvement, the real issue may be layered.