Can you get an allergic reaction to the toner used by a hairdresser after highlights?

Yes, it's possible to have an allergic reaction to the toner used by a hairdresser after highlights.

Hair toners are typically used to enhance or correct the colour of hair after it has been lightened. They may contain a variety of chemicals, including peroxide, ammonia, and dyes. Some people may be allergic to one or more of these ingredients.

Symptoms of a toner allergy can include:

* Scalp irritation, itching, or redness

* Blisters or sores on the scalp

* Hives

* Swelling of the face, lips, or throat

* Difficulty breathing

If you experience any of these symptoms after having your hair toned, it's important to see a doctor immediately.

To reduce the risk of a toner allergy, it's important to patch test the product on a small area of your skin before applying it to your entire head. If you have any concerns about a toner allergy, talk to your doctor or hairdresser before having your hair coloured.