Sage oil can be inhaled for a soothing effect. All you need is to mix 2-3 drops of sage oil with water and use it as a diffuser oil to purify the air. To use Sage essential oil for hair growth, combine 3-4 drops of sage oil with one tablespoon of carrier oil of your choice and massage the mixture into your scalp twice a day for healthy hair growth. you can also use Sage essential oil for skin care as a massage oil. But never use it directly on your skin; dilute a few drops of sage essential oil with a carrier oil and massage it on your skin.