Embrace Your Grays—The Best Hair Dyes for Gray Hair Amp Up Vibrancy and Color
Bergamy-Rosa recommends shades that are one to two levels lighter than your natural color to cover budding grays. “This can ...
BBC1y
Using ratio to work out hair dye and developer proportions
And I know you have to get the amounts exactly right, because if you don't, you don't get the right colour in the end, or worse, you could damage the client's hair. So a tube of colour is 60ml ...
Medscape3d
Alternative Hair-dye Products for Persons Allergic to Para-phenylenediamine
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 ...