Background: Finding alternative hair dyes for individuals allergic to para-phenylenediamine (PPD) has been difficult. Newer permanent and demipermanent hair dyes that have replaced PPD with para ...
Instead, these are hair dyes uniquely formulated for ... For a completely natural dye, he adds to opt for products with no chemical additives whatsoever. When it comes to ingredients you should ...
Some people have the test done to figure out if there are other hair dye products they could use. Allergy testing should be done in a provider's office. The most common test is the patch test. For ...