Problems with the PPD (para-phenylenediamine) in hair dye are one of the most regularly searched subjects on this blog so I am glad to be able to point those who have had allergic reactions to PPD to some more suggestions for dealing with the hair colour problem. Our good …
para-phenylenediamine
PPD in hair dye and elsewhere
If I check the stats for this blog for the most popular posts, way up in the top five is a very short post back in October 2011 on the dangers of PPD. So, it would seem that this is a matter of considerable concern to many people, on which they cannot find much information. On …