research Efficacy and Safety of Once-Daily Minoxidil Foam 5% Versus Twice-Daily Minoxidil Solution 2% in Female Pattern Hair Loss: A Phase III, Randomized, Investigator-Blinded Study
Once-daily 5% minoxidil foam increases hair regrowth and density in women with hair loss, but not as effectively as twice-daily 2% minoxidil solution, though it's safer and more convenient.