The FDA certifies some colors known as coal-tar dyes. Only approved substances may be used to color foods, drugs, cosmetics, and medical devices. But are they really necessary or just nice to have? Check the label of any of your existing products to see if they contain a color or dye.
“Researchers say that in some cases, the red and irritated skin typical of diaper rash may actually be an allergic reaction to various pink, blue and green dyes used in disposable diapers.”