This Specialist Crafts Low Odour Spray Fixative is ozone friendly and can be used on all kinds of artists' mediums to render work and is rub and smudge resistant.Fixative is applied at around a 45-degree angle (as per instructions) if applied straight this can impact results due to the angle of application.Users should ensure that the fixative is not applied too close or too far away from the artwork. We recommend around 25-30cm distance as per the instructions included.Artwork should not be touched for around 30 seconds to 1 minute to allow the fixative to dry.For use by adults or use under adult supervision.