This product is awesome, indeed. You have to be sure to apply it exactly to the lash line/brows and nowhere else. Try not to saturate your lashes, otherwise you'll have hair growing in spots its not supposed to! I applied too much and found fine black hairs growing under my eyes!
The only thing that bums me out about this product is the extremely long wait time to see results, although the 1st of the results were visible to me within 3 weeks. Also, when you stop using it, your lashes do indeed regress back to the original state.