Vanilla Custard Flavour Concentrate by Global Hubb is for use in DIY mixing, and will require other ingredients such as PG and VG to use correctly.
Flavour concentrates are designed to be added to a base mix of VG and PG, infusing a particular flavour into the blend. Users can add in as little or as much flavouring as they wish, allowing for either a strong or weak flavour blend.
By Guy Incognito from Cheshire
I have mixed with other flavours and right now i am using it on its own after only about 8 days of steeping and the flavour has come through well already. My favourite right now, a good quality concentrate.