FDA-approved over the counter minoxidil comes in two strengths — a 2% for women and 5% solution for men.
But I believe women may see better results with the stronger preparation.
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 researchers' 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. Overall, both doses were well tolerated by the 381 women in the study without serious side effects. However, there were more side effects with the 5% solution — more itching and irritation as well as hair growth in areas other than the scalp, such as on the forehead.
I often recommend the new Rogaine Foam (5% minoxidil) because this vehicle seems to be less irritating to the scalp and easier for women to use.
Dr. Craig L. Ziering is one of the leading authorities in hair transplant surgery. With more than 20 years of experience as a preeminent hair transplant surgeon in Southern California, Dr. Ziering has provided help to countless men and women who suffered from hair loss.