SALMON FOR FAST HAIR GROWTH - Salmon fish is packed with the strong hair supporters like Vitamin D and protein, but it also contains omega-3 fatty acids that promote hair growth by keeping your scalp strong and healthy. YELLOW PEPPERS FOR LONG HAIR - Yellow bell peppers have nearly five and a half times more vitamin C than oranges (341 milligrams, as opposed to 63). This is good news for your locks since vitamin C is an antioxidant that strengthens the hair shaft and hair follicles, also prevents breakage.