Highlights Old Spice thickening treatment is infused with castor oil Gives you noticeably thicker-looking hair that makes people start to think, "Wow, that is really luscious, thick-looking hair" Apply to wet or dry hair, spraying 5 - 10 times directly onto your scalp. Massage into hair with fingers. Do not rinse out. Achieve thick-looking hair in just two weeks when used as part of the complete three-step hair thickening system with with shampoo and conditioner Description Bring your hair's fullest potential to life by finishing the 3-step system with Old Spice Treatment with castor oil. The specially created treatment gives you noticeably thicker-looking locks in two weeks. Because thick-looking hair should never be a thing of yesterday when you can have it today and tomorrow, and the day after, and the day after that.