How to test for skin sensitivity before coloring?
Mandatory question
A skin sensitivity test before coloring and a strand test are mandatory “rituals” that every colorist must perform. How allergies manifest themselves, as well as how to properly conduct a skin sensitivity test, are discussed in the material.
An allergic reaction to the dye may not appear immediately and is very different for each client. If, for example, the next day after an allergy test, the skin begins to peel and itch, then even these results should not be neglected.
It can manifest as mild local symptoms or a clinical picture of a systemic reaction.
What are the possible symptoms of a dye allergy?
- itching at the site of paint application;
- redness of the scalp and face (completely or in spots);
- swelling, often especially noticeable in the eyes;
- urticaria;
- sneezing, watery eyes, runny nose;
- in rare, complex cases - swelling of the larynx, increased blood pressure.
For the test, the paint does not need to be mixed with an activator. Before applying the test paint, you must wash and dry the area of skin on which the test will be performed. Most often it is performed on the bend (inner side) of the elbow, behind the ear or between the shoulder blades.
How to test for skin sensitivity?
A small amount of pre-prepared paint must be applied (as we specified above) to a clean area of skin. If you plan to use several shades for coloring, it is better to check the lowest number.
Next, you need to let the paint dry and, for example, stick a patch on this place or leave it as is, if it is convenient for the client. If any reaction occurs within 2 hours - redness, scratching, irritation or burning, you should immediately wash this area of skin.
If not, after 2 hours, wash off the gel color from the skin and monitor the area for the next 48 hours for signs of a reaction.
If the reaction is aggressive, then stop coloring with the tested products and try other coloring products after a few days.