Stupid question but I've just bought some fw menthol concentrate and want to use it to make a strawberry menthol liquid, what sort of percentage do people use when adding menthol?
Also bought some menthol crystals from boots so if any one has a guide on how to make up a concentrate with them that would be great
Also bought some menthol crystals from boots so if any one has a guide on how to make up a concentrate with them that would be great