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We use diluted aqua ammonia which is non toxic and will not leave any toxic residue on the hair unlike ammonia substitutes such as ethanolamine which is toxic and always present in no ammonia hair dyes. PPD Free Hair Color is infused with nourishing silk proteins that penetrate every strand so that the hair looks silky healthy and shiny and in better condition. Ppd Free Hair Dye Brands But remember that alternative products contain alternative ingredients such as preservatives -in this case phenoxyethanol which can trigger allergies. Ppd free hair colourant . The Zero Colours are created for clients with a heightened sensitivity to PPD and even comes in 75ml recyclable aluminium. PPD And PTD Free Hair Color. Some people are allergic to ppd and why product companies suggest a patch test before applying hair color to customers. PPD can cause dermatitis inflammation and eczema to some people. PPD p-Phenylenediamine is the worst element you can use in hair color if you are wor