Pebeo gold gutta coming off in the wash.

Well I've just iron fixed one of my scarves and then washed it, wrapped it in a towel and ironed dry, only to find that some of the gold Pebeo gutta has come out and fixed itself to other parts of the scarf- FRUSTRATING! The Pebeo website says to wait 48 hours after iron fixing before washing and ironing. So I'll try that on the next one. I wish they would put this on the gutta tube. But not to complain it gives me the opportunity to get cracking again and paint another one!