In the world of technology, hair color is characterized by five dimensions: shine, saturation, contrast, hue, and brightness. The disappearance of these 5 dimensions of the color spectrum leads to a dullness of the hair color over time. L'Oreal Professionnel offers an effective solution – the Vitamin Color Spectrum line. The formula, enriched with ferulic and citric acids, purposefully affects all five dimensions of the color spectrum**, providing radiant shine, expressive and bright color with precise shade transfer, neutralizing unwanted semitones and maintaining color saturation for up to 100 days. An important step in the ritual of caring for colored hair is the professional neutralizing shampoo Vitamin Color Spectrum with purple dye. It gently cleanses the hair and neutralizes unwanted yellow undertones of light colored hair. The advantages of Vitamin Color Spectrum professional shampoo for neutralizing yellow undertones of light colored hair, preserving 5 dimensions of the color spectrum and radiant shine: For all types of colored hair, especially bright colors A luxurious cleansing cream that turns into a thick foam It is easy to apply, spread and wash off. Instantly neutralizes unwanted warm shades 91% of consumers note the absence of a yellow tint after coloring**** 93 % of consumers say that their blonde hair looks radiant**** The refined fragrance of the Vitamin Color Spectrum line consists of fresh citrus notes, rosy rhubarb and sandalwood, which will make the experience not only effective, but also incredibly enjoyable.