i too have a scalp moistureing that also acts as a growth boost. in your recipe peppermints and tea tree oil are botha growth stimulater. they are both very stong oils and should be used sparenly. meaning for a cup of oil you might need about 10-15 drops of each oil. also maybe do half olive oil and half grapeseed oil. olive oil is very heavy particualy on the scalp. grape seed oil is a light oil. you dont need to dilute. you have the olive and grapeseed oil for that. you might want to try adding a bi of vitamine E oil into it as well. that also is amazing at moistureing and helps with the health and growth of your hair.