I’ve been using this product for a number of years since my hair started thinning due to chemotherapy. I spray it on areas of my head where I have hair loss and let it dry. I then rub it with a Kleenex to blend it in and that’s it. I brush my hair and style it as usual. It stays in my hair until I wash my hair again. I highly recommend it to anyone who has some hair loss spots on their head that they’d like to cover up.