Citrus Fruits. Citrus fruits, particularly lemons, which contain vitamins A, B and C as well as calcium, phosphorus, potassium and fiber, are blood-cleansing foods.
Another great way to reduce oil production in the scalp is by breaking up the grease before it gets into your body. To do this, every morning drink 1 pint of warm water with the juice of 1 lemon squeezed in. Add to this 1 pinch of himalayan salt, and half a teaspoon of cayenne pepper.
Blend together 1 tbsp. of lemon juice with 5 tbsp. of coconut oil. Apply to the scalp to get rid of dandruff. Lemon juice is a natural home remedy for dandruff and will clear away flakes from your scalp. There is a myth that lemon juice can lead to hair graying.