Dying hair is one of the most exciting
experiences especially when trying out a bold color that may be out of your
comfort zone. It could, therefore, be disappointing to take this daring step
only to discover that you are allergic to hair dyes. Usually, the reactions are
caused by chemicals used in the dyes. Some of those chemicals include paraphenylenediamine (PPD). It is found
in permanent hair dyes, especially those at the darker/black end of the range
and para-aminodiphenylamine (PADA)
and paratoluenediamine(PTDA).
PDD triggers the production of lgE antibodies and the release of
histamine causing dilatation of the blood vessels in the skin and the release
of histamine causing dilatation of blood vessels and also makes these vessels
more porous. The increased blood flow along with plasma seeping into the tissue
spaces of the skin results in skin redness and oedema (swelling of eyelids).
Reactions of one kind or another to the use
of hair dye range from irritant contact dermatitis (irritation occurring locally
in areas direct contact with the dye ; symptoms mostly affect the scalp, neck,
forehead, eyes and eyelids) to allergic contact dermatitis.
Symptoms often occur within two to three
days after a person dyes hair. However, symptoms may last for days to weeks
after the last time a person dyed their hair.
Wash any remaining dye out of your hair
using a strong shampoo to eliminate the entire residue then try using a cream
that can help reduce inflammation.