I used this for 3 weeks on my eyebrows, ... [SEP] I used this for 3 weeks on my eyebrows, not my eyelashes. I did this because my eyebrows are sparse and I wanted them to grow.I did notice that existing hair did seem fuller and longer on my brows, but places where I had patches, did not notice any new growth. It's not a miracle worker and I feel that it works more for making eyelashes grow. I received free to test and review.