Home Hair Care Henna hair color: is it harmful?

Henna hair color: is it harmful?

by Josephine Andrews
Published: Last Updated on 315 views

Chemical hair dyes attack the hair and can cause allergies. Henna hair color is a natural alternative that allows you to gently change hair color – without damaging the hair. Read here what you should pay attention to with henna and how to dye your hair with it.

Is henna harmful?

For a while, henna hair color was suspected of altering the human genetic makeup. However, various studies have refuted this suspicion. The Federal Office for Risk Assessment sees no restrictions on the use of pure henna hair color today.

However, a warning is given against henna products that also contain synthetic hair color components such as p-phenylenediamine (PPD) or 2-nitro-PPD to achieve a darker coloration. These can cause allergies and can be very harmful to health. That’s why you should look very carefully when buying henna hair color and only buy products that are purely herbal and do not contain any of the additives mentioned .

What is henna?

Henna hair color is derived from the leaves of the henna plant (Lawsonia inermis, alba, spinosa) native to Africa and parts of Asia. The deep red powder naturally dyes the hair orange-red to red, depending on the natural hair colour. If substances such as chamomile , sage , walnut, indigo or metal salts and pyrogallol are added to the pure henna powder, henna dyes hair from light orange to reddish-black or blue-black.

Dyeing hair: How to use henna correctly!

Hair color henna means hair color red. What the result looks like in concrete terms depends primarily on your natural hair color. In addition, many henna colors have natural or artificial additives that influence the color tone. The palette of shades that can be achieved with henna colors ranges from light orange to almost black.

How to properly apply henna:

  • Mix the powder with warm water and distribute the resulting paste well throughout the hair.
  • Afterward, cover your head with foil to keep the paste from drying out.
  • Depending on the desired shade and personal starting color, the henna hair color must act for a shorter or longer time. Rinse the paste thoroughly with water after the exposure time.
  • Then shampoo the hair several times until the hair and scalp are clean again. More detailed information on the application and the exposure time can be found on the packaging of the henna hair color.
  • Repeated shampooing partially removes the dye from the hair over time. However, depending on the structure, a non-removable part of the henna hair color remains permanently in the hair.

Dyeing hair with henna: this is important!

  • The exposure time is significantly longer than with chemical paints – it is often at least two hours.
  • Caution is important when handling henna. The plant color stains very strongly.
  • Henna cannot be completely washed out. If you then dye your hair again with chemical products , it is necessary to wait until the henna is washed out. Otherwise, unforeseen results may occur.
  • It is not excluded that henna changes the hair structure and dries out the hair.

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