I use Lorann's candy flavoring for my DIY. I use a flavorless 48mg nicotine and cut it with a 70%PG- 30%VG mixture. The amount of flavor that I add is between 20 and 30% depending on how strong the flavor is.
Is Flavor Art more concentrated and stronger than Lorann's? There is no way I would be able to taste a thing at anything below 10%.
FlavourArt is the most concentrated flavor that I have found to date. Much stronger than Loranns