A screening test for allergy to hair colour (PPD) Contains p-phenylenediamine (PPD). Colourstart should only be used by those aged 16 or over. See details below, always read the patient information leaflet https://colourscreen.me/wp-content/uploads/2023/07/97315-SmartP.-Colourstart-Brugs-UK-52-4008-00.3-korr.pdf