Tuesdayâs debate between the Democratic presidential candidates, including Hillary Clinton and Bernie Sanders, will be streamed online for free. CNN, which is hosting the debate, will have it available on CNN.com and on the networkâs mobile apps. Coverage begins at 8:30 p.m.
Paraphenylenediamine (PPD) is a chemical substance that is widely used as a permanent hair dye. It may also been found in textile or fur dyes, dark coloured cosmetics, temporary tattoos, photographic developer and lithography plates, photocopying and printing inks, black rubber, oils, greases and gasoline.
An individual who develops sensitivity to PPD will commonly experience symptoms after 10 days of the first usage of hair dye. Subsequent use or exposure to hair dye will produce a reaction in about 6 to 72 hours. Allergy to hair dye can produce symptom or reaction known as Urticaria which is commonly known as hives.