I've

got some AE, some A1 which are all about 2 years old. I've tried the AE and the A1 recently, but haven't really

noticed any significant effect.

It is possible that these products (mixed or alone) never would have worked

that well with me to begin with, but it is also possible that they have "gone off" after having been left so long.



Does anyone know how long these things are supposed to last?