On herceptin and perjeta , stage 4 , itchy skin and now itchy scalp -anyone treated itch sucessfully

Sorry to hear about the itchy skin @noosa_blue150 and @Blossom1961 .... when my husband's chemo caused the same, we actually used CORNFLOUR on him & it really helped take the edge off it!!   

I'd stand him in the bath or shower & would sprinkle it all over the affected areas & gently rub it in  (which was most of him!) then after he put his clothes back on, I'd just run the water & rinse it off the bath/shower - as it sort of dissolves quite easily!   Definitely worth a try ...  

A bit trickier for your scalp tho :(   You could try it .....