The aroma dual RY4 is a full-bodied version of the traditional RY4 (vanilla and caramel blend ). 
The focus is mainly on the caramel, more pronounced, although the most sharpened nose can enjoy a fruity note, light and subtle. Double RY4 is a best seller in perfumer's apprentice.
 
Recommended dosage: most use as high as 10% to 12% 
Ingredients: Artificial Flavours, Propylene Glycol, Water, this flavours colour changes depending on the batch from light golden brown to medium red, this is normal