yeah well i have a gun.. 
Ok...so which is for a mohair then?
Currently just using the autoglym stuff on the roof...
Dinx 
Hi
I would stay away from snow foam on Mohair because most snow foams have an element of TFR (traffic film remover) in them. TFR could over time start to bleach or fade the colour out of your hood.
Don't forget when using snow foam it gives best results if left to dwell on the car for 10-15 minutes.
I would use Snow foam on the lower half and if the hood needs a clean from time to time a regular ph neutral shampoo or branded product made for cleaning the hood.