1. Castor Oil
Massaging your scalp regularly with cold-pressed castor oil is one of the easiest ways to get thicker hair naturally. Due to its high viscosity, it coats the hair thoroughly and protects against hair fall. Plus, being high in vitamin E and fatty acids, it promote hair growth

2. Aloe Vera
Another very popular ingredient that can be used to enjoy thicker hair is aloe vera, thanks to its moisturizing quality. It will also help restore the pH balance of the scalp.

3. Henna Leaves
Another easy way to get thicker hair naturally is to apply henna. Henna leaves will give your hair a rich natural color and make it thicker, softer and less prone to breakage.

4. Flaxseed
Being rich in omega 3 fatty acids and protein, flaxseed can also help in promoting thicker naturally.

5. Healthy Diet
A healthy diet rich in protein and various vitamins and minerals is an essential prerequisite for healthy and thicker hair. Protein and B vitamins, in particular, promote thicker and longer hair.

So, include more milk, eggs, Greek yogurt (has more protein than the regular yogurt), poultry, fatty fish, beans, legumes, nuts, seeds, whole grains, and fresh green vegetables in your diet.
Follow these remedies religiously and you will notice improvement in your hair texture and thickness in a matter of weeks.

Source: Top 10 Home Remedies