For skin :

Hazelnut oil is very rich in fatty acid which allows it to reduce the sebum and tightens the pores. It is soothing and it allows to moisturize the skin without a greasy finish. It help aid in skin healing, you can use like makeup remover.

To use: massage your face with a frew drops in the morning and the evening. If use like a makeup remover, rinse your face with clean water.

For muscle pain :

It rich in vitamin E, which allows it to have an extremely strong penetration power so as not to leave a greasy finish. It's ideal to prepare muscles before exercise or relax them after the exercise. 

To use : Massage the muscles before or after the exercise to make the oil penetrate well.