Bianna 500ml Purple Anti-Orange Sulfate Free Paraben Free Shampoo

Hello Dear Customer, The purpose of keratin care is to smooth the hair and create a protective keratin layer on the hair surface. Thanks to this layer, the hair looks straighter, healthy and shiny. However, shampoos containing sulfates (especially Sodium Lauryl Sulfate or Sodium Laureth Sulfate) quickly wear away this layer, negating the effects of keratin treatments in no time. So using "salt-free" meaning salt-free shampoos is key. After keratin treatment, hair is straightened but requires increased moisture. Therefore, the shampoo to be used must have ingredients that will provide intense moisture to the hair. If you have light hair, blonde or with highlights, and want to maintain the cold tones of your hair color after a keratin treatment, the use of purple shampoo can be useful. Purple shampoo neutralizes any orange or yellow undertones in the hair, resulting in a more ash-brown appearance. Hairdressers usually suggest to use purple shampoo about 1 time/week, because overuse may cause blue or purple reflections in the hair. If your hair color is a natural dark shade or has not been lightened to a light shade, you do not need to use the purple shampoo. Dora Cosmetics Customer Service