Initial shedding (usually in weeks 2–6) is actually a positive sign that the treatment is working. Here's why: Minoxidil pushes follicles from the resting phase into the growth phase. The old, weak, miniaturized hairs fall out to make room for new, stronger hair growth. This is temporary and subsides within 4–8 weeks. Don't stop treatment during this phase, that's when it matters most.