Apply minoxidil to a dry scalp, spreading the recommended amount (about 1mL of solution or a half-capful of foam) over the thinning area and rubbing it in. Use it consistently — foam dries in minutes, solution takes longer.
Foam vs solution: how to apply
Both 5% foam and 5% solution deliver the same active drug; the choice is mostly about convenience and scalp tolerance. The key is applying it to the scalp skin, not the hair, on a clean and dry head.
- Solution: use the dropper to place about 1mL directly on the thinning areas, then spread with your fingertips. It contains propylene glycol, which can cause itching or flaking in some people, and it takes longer to dry.
- Foam: dispense about a half-capful, apply with fingertips, and massage in. It is propylene-glycol-free, dries faster (often within minutes), and many people find it less irritating.
General steps:
- Part the hair to expose the scalp in the area being treated.
- Apply only the recommended amount — using more does not speed results and increases the chance of it running onto the face.
- Rub it gently into the scalp.
- Wash your hands thoroughly afterward.
- Let it dry fully before styling, lying down, or applying other products.
How often and drying time
For the 5% solution the studied, standard regimen is twice daily; 5% foam is generally used once daily for men, depending on the product, so follow the label or your clinician's advice. Space twice-daily applications by several hours and aim for the same times each day so it becomes routine. Foam typically absorbs within minutes, while solution can take a couple of hours to fully dry and may leave hair feeling stiff or greasy in the meantime. Avoid washing the scalp for at least a few hours after applying so the drug can absorb.
Tips for better results
Consistency is everything — minoxidil only works while you use it, so build it into your daily routine. Apply to a dry scalp; a wet or damp scalp can dilute the product and increase irritation without improving results. If you apply at night, let it dry completely to avoid transferring it to your pillow, partner, or pets.
Expect a temporary uptick in shedding in the first weeks as follicles reset — this is usually a normal early sign rather than a reason to stop. Give it 3-6 months before judging results. Stop and see a clinician if you develop significant scalp redness, swelling, a rash, dizziness, a rapid or irregular heartbeat, chest discomfort, sudden unexplained weight gain or swelling, or unwanted facial hair growth, which can occur if the product spreads beyond the scalp.
Try the free self-check →FAQ
Should I apply minoxidil to wet or dry hair?
Apply it to a dry scalp. Towel-dry and wait until your scalp is fully dry after showering, because a damp scalp can dilute the product and increase the risk of irritation while not improving effectiveness.
Is foam or solution better?
Neither is clearly superior for regrowth — both contain the same active drug. Foam dries faster and avoids propylene glycol, so it suits sensitive scalps and busy mornings; the solution lets you target areas precisely with the dropper. Choose whichever you will use consistently.
Explore more
⚠️ When to see a doctor — don’t self-treat
- Sudden patchy or circular bald spots
- Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
- Broken hairs or rapid loss
- Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
- Loss right after a new medication
- Any hair loss in a child