Yes, you can use a derma roller along with minoxidil, and this combination may improve hair growth when done correctly. Use a derma roller with small needles (usually 0.5 mm for home use) on a clean scalp once or twice a week. Gently roll it over the thinning areas in different directions without pressing too hard to avoid injury. After rolling, wait at least 12-24 hours before applying minoxidil to reduce irritation and excessive absorption. On non-rolling days, continue applying minoxidil as prescribed (usually twice daily). Always disinfect the derma roller before and after use, and avoid using it on an infected or irritated scalp. Stop if you notice pain, bleeding, or worsening redness. If you are unsure or have sensitive skin, it is best to consult a dermatologist before starting this routine.