has anyone heard of anything like this....The stylist that works in the salon where i do my nails had a girl in the other day for high lift foils, she did a stand test in foil and it was fine, when she came to do the girls hair each section she did was taking in literally 10 mins and had to be taken off as it was sooo hot, when she finished she did a compatibilty test to see what was going on and it boiled !!! showing, as we thought, metalic salts in the hair, the girls swears blind she hasnt put colour or henna on ??? why would the strand test be ok but have this sort of reaction with a compatibilty test ?