Take care of your brows and lashes with the Ardell Brow and Lash Growth Accelerator that works to nourish the hairs with its protein rich, concentrated serum formula. Hairs appear instantly healthier once applied, and added conditioners act as a treatment gel to help protect against any future damage. Apply at night following cleansing, once all makeup has been removed. The brush makes applications simple and straightforward. Leave on all night for the best results!