17 inch long, black, virgin, healthy straight hair

17 inch long black hair (with a hint of dark brown). Hair is virgin, healthy, shiny, smooth, soft and straight. Never bleached or dyed. Nor heat styled ever. No dandruff or any other infection. No split ends. I am a vegetarian with a healthy lifestyle and don’t smoke at all. Wash hair at least 3 times a week. Use coconut oil regularly to keep them from getting frizzy due to dry weather especially in winters. hair not cut yet.