I am a female using this 5% rogaine foam for males. I started using 2% rogaine for women about 5 months ago and saw only minimal improvement in my hair re-growth. Then I read that women also can use the 5% rogaine for men with a small possibility of developing facial hair. I decided what the heck I will try. In less than 1 month using the 5% rogaine I can see a great improvement. Don't know if this is a cumulative effect of using the 2% before, but I definitely see lots of new hairs. Will continue using it and don't plan switching back to 2% (hopefully I won't get a beard!) Great stuff that definitely works!!! 5 stars!