Bobbi Brown Perfectly Defined Mascara. Perfectly Defined Mascara makes the most of every lash. In one easy sweep, this ingenious mascara lengthens, separates and curls lashes for perfect definition. The secret is a unique multi-comb brush and equally innovative formula, working together to enhance each and every lash. The flexible, all-day wear formula resists flaking, doesn`t smudge and stays in place all day. Best of all, it removes easily with warm water. Ophthalmologist and Dermatologist tested. Safe for contact lens wearers.