For many people, it will work well as an elegant body and hair/all in one wash. For others, their hair would be best washed separately - it depends on your hair type and hair length. It can be effective to blend into shampoo formulations to make them more gentle on the hair and scalp.
Use 35% to 65% as a general guideline depending on the oils it is combined with.
Oil soluble so cannot be used in water only products.
If it is stored in cold conditions, it may sediment. This can be mixed together whilst it is warmed gently to 30°C without affecting the quality.