Jane Iredale PureLash Extender & Conditioner provides a much-needed step towards unbelievable lashes. When used to prime lashes for mascara, it adds measurable thickness and length and allows you to use less mascara. A single coat of this revolutionary formula before applying mascara will help strengthen, lengthen and thicken your lashes, making the mascara twice as effective. - Algae extract conditions and protects lashes. - You will need to apply less mascara. - Stops lashes from drying out and splitting. - Allows lashes to grow to their fullest potential. - May even encourage extra growth. Paraben free. Jane Iredale is a PETA certified cruelty-free brand; they do not test any of their products on animals.