if you want to grow your hair long, two tbls of olive oil, two egg yolks and two tbls of apple cider vinegar mixed together and applied as a hair mask for an hour and then rinsed out, done once a week, can double your average hair growth in a month, all can be found at the grocery store at reasonable prices, and no harsh chemicals.
Homemade Mask for Hair Growth: 1 can coconut milk, 1 cup yogurt, 1 tablespoon olive oil, 1 egg yolk, 2 tsp cinnamon (if you want to lighten your hair gradually) , 3 tsp ginger powder (aids in hair growth!). Simmer on low heat for a few minutes, stirring slowly. Apply to hair when it's warm to the touch. Smear evenly. Put hair in bun. Wrap with plastic bag. Cover with towel. Relax for 60 minutes. Rinse well. Enjoy!