According to Dr. Andrew Weil, hempseeds can be used to make oil, milk or protein powder, all of which contain a healthy dose of omega-6 and omega-3 essential fatty acids. In "Beauty by Nature" by Brigitte Mars, the author notes that hempseed oil in shampoo can relieve dry, itchy scalp and add shine to hair. Some specialty shampoos and conditioners available online contain hempseed oil, but you can make your own chemical-free oil-infused hair products or apply hempseed oil topically.
Make Hempseed Oil Shampoo
Mix ½ cup each of water and liquid soap in a mixing bowl. This recipe comes from Janice Cox in “Natural Beauty for All Seasons.”
Add ½ tsp. hempseed oil. Cox’s recipe uses light vegetable oil, but hempseed oil’s superior moisturizing qualities make it a good choice for dry, brittle hair.
Stir all ingredients with a wooden spoon and pour the mixture into an empty shampoo bottle.
Shampoo as usual. Los Angeles hairstylist Philip B. tells "Marie Claire" magazine that you should only shampoo every day if you have greasy, oily buildup. If your hair isn’t oily, wash it every other day or every third day, brushing beforehand to work oil away from the scalp.
Use your fingers to massage hempseed oil directly into your scalp. According to “Beauty by Nature” by Brigitte Mars, hempseed oil penetrates the skin better than other vegetable oils used in lotions or creams. The oil helps heal irritated tissue and restore skin’s moisture content.
Brush your scalp after applying the hempseed oil. Corey Powell, stylist at The Salon by Maxime in Beverly Hills, tells "Marie Claire" magazine that brushing actually stimulates hair growth by increasing the flow of blood to the scalp.
Use heat to work the oil from your scalp to the tips of your hair. Powell uses a hair dryer, gently heating the oil and working it down to the ends to protect them from styling damage and the harsh drying effects of shampoo.
Make a Hempseed Oil Hair Mask
Mix 3 tbsp. milk, a banana, an avocado, 3 tbsp. honey, 3 tbsp. rosemary, an egg white and 5 tbsp. hempseed oil in a blender. The ingredients in the recipe come from stylist Powell, who uses pomegranate and camellia oil in place of hempseed oil. Feel free to try the recipe with these oils later, once the hempseed oil has restored your hair’s shine and bounce. The rosemary, Powell says, will help rejuvenate hair follicles.
Apply the mask to your hair and let it sit for five minutes.
Rinse off the mask with cool water and style as usual.
Using hempseed oil will not cause you to test positive on a drug test or experience any mind-altering effects, according to author Brigitte Mars.