I decided to try this product since I'm finding all my favourite eye brow liners tend to smudge, blur on long days and it seemed really handy. And I am so glad I did! The marker part filled in my very sparse brows (from youth of over plucking) so nicely while the mascara kept all the few hairs I still have in place all day. Even when I slept with it on it was still really nice the next day. Fantastic product and recommend it to anyone wanting a handy one shot product for brow grooming.