Enhances your lashes with up to 60% lengthening effect and precise lash by lash separation. The flat side of the patented flexible precision brush lengthens lashes and coats from root to tip. The comb side of the brush precisely separates lashes with no clumps for a dramatic look. Removes easily, does not clump, flake free, and smudge free. Ophthalmologist and allergy tested, suitable for sensitive eyes and contact lens wearers. Tested under dermatological control for safety.