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Bigen Hair Dye is a popular low-priced at-home hair product used by thousands of men and women each year seeking to cover greying hair or to simply change up their physical appearance. The product is manufactured and distributed by Hoyu, a Japanese cosmetic company. Hoyu distributes Bigen hair products to over 70 countries, including the United States, and markets its hair dyes as safe and gentle. But many have suffered from serious reactions and health problems from the dye.

If you used Bigen Hair Dye and suffered severe injuries including blistering, chemical burns, sores, loss of hair, and airway restriction, call the Charles Boyk Law Offices today.

Dangers of Bigen

Many of Bigen’s most popular dyes contain various harmful chemicals, including Paraphenylenediamine (PPD) – which is banned in several European countries. PPD is a known irritant and allergen and is the source of most adverse reactions to hair dyes. The chemical may either act as an “irritant”, directly damaging the skin it comes in contact with, or as an allergen, triggering an allergic reaction that affects the skin. In fact, the American Contact Dermatitis Society named PPD Allergen of the Year in 2006 in an effort to bring attention to the risks that the chemical poses to consumers, especially the possibility of severe skin reactions after exposure to the chemical in hair dyes.


Allergic reactions can include:

  • Severe itching
  • Rashes
  • Swelling
  • Chemical Burns
  • Blistering
  • Scalp Sores
  • Black Eyes
  • Loss of Hair
  • Scarring
  • Airway Restriction
  • Severe Pain
  • Vomiting
  • Welts
  • Eczema

These reactions are especially serious in people who use darker colors of dye, which could expose them to higher levels of PPD.

The reactions can come on suddenly, or develop over a period of several hours to days following exposure. While reactions may occur on the scalp where the product was applied, visible irritation or inflammation on the scalp is often not observed due to the skin being shielded from the hair by the dye. Men dying their beard or moustache may develop reactions on their face. If a person has been previously exposed to and sensitized to PPD, they may experience more severe reactions and/or reactions on their neck, chest, and arms and/or swelling of their face and eyes.

Individuals are at a particular risk if they have or have had a black henna tattoo. These temporary tattoos should be avoided because the tattoo often contains toxic levels of PPD, which can sensitize you to the PPD. Essentially, this means your immune system will “remember” the chemical and launch a defensive reaction the next time you are exposed to it. Such reactions can be very serious, you could develop a life-threatening allergic reaction when you next use PPD hair dye.

While Bigen’s manufacturer recommends that a patch test is performed before the hair dye is used, it should be noted that patch testing, just like black henna tattoos, is creating an additional skin exposure to PPD and may play a part in increasing the risk of sensitivity to PPD. Additionally, patch tests do not alert individuals who develop reactions beyond 48 hours or who have very weak patch test reactions that go unnoticed.

What to do If You Were Harmed

If you used Bigen Hair Dye and suffered a serious reaction that required medical treatment, you may be entitled to compensation. Our firm is highly experienced at evaluating and handling Bigen claims. For a free case evaluation, please contact our office at 877-230-7459 or fill out the contact form on this page.