How should i know how much essential oil to use in my hair?

there seem to be many different mixtures on the internet eg 8 drops lavender 1 oz jojoba. does it HAVE to be this much amount or can it differ?How should i know how much essential oil to use in my hair?
It can differ. You can play with the oils and find a level that you like. Recipes on the internet seem to be kind of arbitrary. As long as you either know the safe dilutions amount of each oil, or at least are using oils that are among the safer oils (lavender is), you can make up your own formulas.





8d of an essential oil to 1oz of a carrier is less that a 1% concentration, which would be safe for almost all commonly used oils. With lavender, you can go up to 10%, and barring a rare allergy, you'd still be fine. With most oils you'd probably want to stay closer to 5% and under.