Do you know that your hair ages? The makers of the best-selling must-have, Age Intervention Eyelash Conditioner, now bring you the hair of your dreams with Jan Marini's NEW Age Intervention® Hair Revitalizing Conditioner. Introducing a stunning new technology that targets thinning, aging, or chemically and environmentally challenged hair. Get ready for lusher, fuller and younger looking hair. Hair with body, bounce and vitality. The hair of your dreams from Jan Marini. Age Intervention Hair can be used in conjunction with all of your favorite shampoos, conditioners, and styling products with results that are visible from the first application. It comes in a 4 oz. spray bottle that you spray sparingly and then rub into the scalp. The product should last 6 months plus.