The most important thing is if you can't eat it, then it should not be used on your hair, scalp, skin and in or on your body. Any toxins, chemicals and artificial ingredients and products are harmful to your body and the first place you'll find the problematic results is on your skin (your scalp is considered to be skin).
Here are the best treatment for dandruff, dry hair/scalp and problems of the scalp, which will eventually lead to hair problems such as hair loss, loss of shine, and more:
Peppermint Shampoo/Body Wash/Face Cleanser
Peppermint oil delivers energy, stimulation and circulation of scalp, focus and increases metabolism. It wakes you up. Great for using in the morning.
Lavender Shampoo + Body Wash
Lavender Shampoo/Body Wash/Face Cleanser for evening as it is calming, relaxing and soothes and moisturizes the scalp. Lavender oil relaxes you and helps with sleep and anxiety.http://www.essentialoilsfromplants.com/lavender-shampoo-body-wash
Tea Tree Oil
Use tea tree oil for the health of your scalp as continued dandruff will also lead to issues with your hair. http://www.essentialoilsfromplants.com/tea-tree
Skip hair conditioners and styling products that contain ingredients you can't eat. Use coconut oil for daily conditioning and as a leave-in conditioner. It can also be used as a deep hair and scalp mask over night. Taking 1-2 tablespoons of coconut oil daily will also help improve the health of your skin, hair and body. It is a healthy good fat that increases your metabolism, reduces or maintains blood pressure, burns off fat and cholesterol, keeps organs and brain healthy and much more.
African Shea Butter plus Coconut Oil
Depending on if your hair, scalp and skin is dry, normal or combination, use African Shea Butter plus Coconut Oil once or more a week to get rid of extremely dry skin and flakes. If you have dry skin/scalp, use more often. This is a great skin moisturizer as well. Use it especially on tough, dry areas like feet, knees and elbows. It will help keep your hair (whether straight, wavy or curly) smooth and shiny.
Cedarwood Oil keeps hair from thinning out and helps it to stay youthful. Prevent and treat hair loss with this essential oil that's loaded with nutrients and anti-aging properties.
All of these natural remedies can be used on children and pets as well.