For an itchy scalp, can mostly any of these oils be added to the tea tree shampoo?

jojoba


basil


lavender


peppermint


rosemary


neem





and doesnt it matter how MUCH is put into the shampoo and how often you use it?For an itchy scalp, can mostly any of these oils be added to the tea tree shampoo?
If you're putting these into the Paul Mitchell Tea Tree shampoo, you can actually read the ingredients on the bottle to see if it contains any of those ingredients.


I know they have a Lavender Mint shampoo (moisturizing) and a Lemon Sage (thickening) shampoo. I'm not sure what's in the Special, though.





And I wouldn't add anything to a shampoo, just because it may decrease the effectiveness of the shampoo.





Good luck, and I hope you figure it out!