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7 out of 17 brown hair dyes fail the “Ökotest” (ecological test)

Not only since pandemic times hair dyeing is at the top of the list of those treatments that we can implement ourselves in our own bathroom. But how natural are the supposedly alternative products that we massage into our skin and scalp? “Ökotest” took a closer look at 17 products.

Of the 17 brown hair colors that "Ökotest" examined for their ingredients, only 10 were convincing in the end, with 7 rated as "unsatisfactory." The problem is that "natural hair colors are not so easy for consumers to recognize. In the trade there are genuine plant hair colors just like synthetic permanent colors, which make on vegetable", it is called in the test report.

How do vegetable hair colors work?

The latter advertise their naturalness, but in the end they still contain potentially allergenic and skin-irritating substances. Generally speaking, while vegetable hair colors mainly cover the outer cuticle layer of the hair and have less opacity, the initially colorless chemical oxidation hair colors penetrate deep into the hair and unfold their artificial pigments there.

Hair dyes in the "Ökotest" – Problem contact allergy

One that can not überzeugen is the Wella EOS Tönung on plant base – a product for which the manufacturer advertises that it is based on "natürlichen, from three plants derived dyes": Henna, Cassia and Indigo. What sounds so natural, however, is not without chemicals: The testers criticize contained aromatic amines, synthetic dye precursors, many of which are considered contact allergens. If substances such as Hc Red No. 3 trigger a contact allergy with painful irritation, swelling and itching, the allergy lasts a lifetime,” says the test report.