I follow a very easy rule;
If I would eat it, I will put it on my skin.
If I would not eat it, I will not rub it on my skin.
And I follow an even simpler rule for what to eat; If my grandma recognizes it as being food I will eat it.
It keeps me healthy and it is very cheap; Coconut oil...
I bake in it and it is my skincare.
I wash my hair with a shampoo made of oils and herbs. once every 2 weeks.
And I smell like roses.