It is also an emollient and is soothing to the skin.
As an astringent, it will help to tone an oily scalp.
Use at 3% to 6%. It is safe to use at higher amounts but there is a possibility that the end product may feel a little sticky.
Water soluble so cannot be used in oil only blends.
Once opened do not leave the cap off the bottle whilst you are working and after use, squeeze some of the air out of the bottle to reduce potential oxidation and seal tightly.
Store in a cool, dry place.
Protect from freezing and direct sunlight.