SocialLites flavour concentrates are USP food grade 1 and is extracted from natural resources with no sweetener and no food colouring added. Most of the flavour usage are 6%-15%, depending on Flavour intensity preference. Don’t use the concentrate in excess for your own safety and to avoid inappropriate over taste. Please put under 6%-15% flavour concentrate even if you need more flavours mixtures. All our e-liquids contain no diacetyl or related compounds.