BLACK HENNA: Allergen or Not An Allergen?

BLACK HENNA: Allergen or Not An Allergen?

Allergen. Black Henna Pure, organic henna with no additives is generally not allergenic, but black henna is. In a big way. The reason for this is that black henna has PPD or para-phenylenediamine (which is on published common allergen lists) added to it to make its color black, to make it more vivid, and to make it look …

INK: Allergen or Not An Allergen?

INK: Allergen or Not An Allergen?

Allergen. Ink “Ink,” as such, also does not appear on published allergen lists, but most things that go into making ink do. These include glues and adhesives (epoxy and acrylic resins — the inks need a fixative to help them adhere to a surface when applied), dyes, phenylenediamine, and certain preservatives. Soy ink can be a better alternative …