Zero is Vitality’s revolutionary colour treatment that covers, lightens, protects and restructures, minimising the risk of skin sensitisation. Zero is the professional colouring for everyone.
100% Colour In Absolute Safety.
Zero has eliminated para-phenylenediamine (PPD), thus becoming even more tolerable for people prone to irritation.
Para-phenylenediamine is a component of colourings, but in Zero it is replaced with PTD (para-toluenediamine) which is much better tolerated by those who are allergic. 57%* of customers allergic to PPD can instead tolerate colours with PTD.
*Source: National Institutes of Health, Northwestern University Medical Center