Multi-select problem: How does the next paragraph end?

How to use essential oils to prevent an itchy scalp
Talk with your dermatologist.
Before you start any home remedy for scalp issues, you need to talk to your dermatologist. They will help you determine the cause of your itchy scalp.

Pick from: [I] Look on your dermatologist's website for more information. Some common causes include : Hair allergy skin irritability scalp insecurity Use tea tree oil as a hair remedy. [II] Discuss with him or her how you want to use home remedies to help, especially essential oils. He or she will help you find the right blend for you. [III] For example, they may suggest switching to essential oils without causing a allergic reaction. Your dermatologist may suggest a carrier oil such as lavender or orange essential oil. [IV] This is the best way to determine if you need to make any lifestyle changes, and how often you can use your essential oils. Ask your doctor about the benefits of your essential oils if you're pregnant.
[II]