Flavor West flavour concentrates are Naturally and Artificially Flavoured. Made in the USA & Rebottled by Vapour Depot in the UK. Available Sizes: 10ml, 30ml, 100ml Recommended Mix (Single Flavour): 8% Recommended Mix (Multiple Flavour Recipe):4% Requires mixing with Vegetable Glycerin & Propylene Glycol before can be vaped. FW Natural Red Ruby Grapefruit Concentrated Flavouring We know that all you really want is a delicious tasting, high quality food grade concentrated flavoring, and that’s precisely what we bring you. Natural ruby red grapefruit flavor is an irresistible addition that comes with the characteristics of natural red grape. A tart and cool, delicious fruity flavor