OrientLeaf Rosemary Oil does good in hair and skin care. Just add some rosemary essential oil to your shampoo or hair conditioner, it can moisturize dry hair scalp, help your hair growth. For skin care, dilute the rosemary oil with carrier oils and use it to clean your skin, then you will have a shiny skin. With an herbaceous warm aroma, this rosemary oil can be used in diffusers, humidifiers, spray, roll on, or inhale for relaxation and promote concentration. However, it should be noted that the concentration of rosemary essential oil is very high, so it is must to dilute it before applying it to the skin and hair. Dilution. Mix it with carrier oils such as coconut oil or almond oil to avoid irritation, skin burns, or allergic reactions. Patch Test. It is recommended that the patch test be carried out before rosemary essential oil is used on large areas of skin. Apply a small amount of essential oil to a small piece of skin and wait for 24 hours to check for any adverse reactions, such as redness, itching, or irritation. If any discomfort occurs, please stop using. Precautions. When using, avoid applying rosemary essential oil near sensitive parts such as eyes, ears, as it may cause uncomfortable burning sensation.