Are high-strength minoxidil formulas better than lower-strength ones?
Topical minoxidil is available over the counter in 2% and 5% formulas. The 5% solution is generally believed to be more effective at maintaining existing hair and stimulating new growth. A study in the April 2004 issue of the Journal of the American Academy of Dermatology compared 48 weeks of treatment with 2% and 5% minoxidil in women with female pattern hair loss. Compared with placebo, 5% minoxidil was superior in regards to hair count and patient and researcher evaluations of hair growth. While the 2% solution improved hair count and researchers’ assessments of hair growth, the patients did not appear to notice a significant improvement in hair growth. The 5% solution is typically not recommended for use in women because of possible increased hair growth on the sides of the face. However, this growth is (can be???) temporary and some practitioners do use it after explaining the full range of possible side effects and complications to the individual.
