What Causes Itching Of Body After Keratin Treatment?

Hi,
Today I went to a hair salon on Pune for a Brazilian blow dry, which is a keratin treatment. Since returning home about 3 hours ago I have begun to itch severely all over my body, have tingly left arm and generally feel unwell aling with chest pain in my left breast After i looked up what keratin is I am becoming very distressed and worried about what I have done. How can I stop the itching? Is the itching dangerous ? Shi
Ulf I wash the keratin out of my hair? Please help