In order to have stronger hair roots, you can add Melissa and jojoba oils to olive oil. These will help give hair moist whereas adding a few drops of rosemary, oregano, garlic, and argan oils will help the capillaries work and strengthen the hair roots. You can apply this mixture to your hair. You can use argan oil on its own or almond oil with a few drops of castor oil. Castor oil promotes luxuriant hair growth and makes it thicker.