Irritant Dermatitis

Irritant dermatitis is caused by a substance which can create cell damage when applied for the first time in strong concentrations i.e. bleach, relaxer (sodium hydroxide). It can also occur when weak concentrations of successive applications i.e. shampoo are used. That substance is called the primary irritant. The reaction caused may be inflammatory but it is not an allergic reaction.

Primary irritants that may cause non-allergic reactions include shampoos, hair cosmetics such as conditioners, setting lotions, or perm lotions, para-dyes and relaxers on black hair. Plants and metals can also create similar problems.


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