Skin sensitivity test Development of colour. Two products essential for permanent tinting service: Professional eyelash or eyebrow tint Hydrogen peroxide.

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Presentation transcript:

Skin sensitivity test Development of colour

Two products essential for permanent tinting service: Professional eyelash or eyebrow tint Hydrogen peroxide (H2O) Tint contains small molecules of permanent dye called Toluenediamine. These need to be activated= The Peroxide is said to develop the tint Hydrogen Peroxide is an oxidant= a chemical that contains available oxygen atoms & encourages chemical reactions.

Some clients are sensitive to the tint, and procedure an allergic reaction immediately; others may become allergic later. Positive= Result is recognized by irritation, swelling or inflammation of the skin- if this occurs, do not proceed with service Negative= Results produces no skin reaction- in this case proceed with service.