Batteries not included. N/A Fights 7 Signs Of Aging Hair: Breakage, Split Ends, Frizz, Unruly Grays, Lackluster Color, Thin Look, Dryness For Hair That Acts Up To 10 Years Younger, Use With Agedefy Advanced Thickening Treatment Created With Olay Anti-Aging Experts Gentle Enough For Daily Use On Color-Treated Hair