You can absolutely combine your brewer's yeast cure with the Grow Complex. Brewer's yeast contains certain B vitamins, constituent components of keratin, the raw material of hair. But for a strong and deeply nourished hair fiber, it is essential to provide all the active ingredients constituting keratin. In the Growth Complex, you will find not only B group vitamins (vitamins B5, B9 and B8) but also all the other constituents of keratin (sulphur-containing amino acids, trace elements, etc.). To accelerate growth, it also contains a unique extract of field horsetail and rocket to considerably stimulate the activity of the bulb.