Red 33 (CI 17200)

Also known as D&C Red 33 or Acid Red 33, this ingredient is a synthetic azo used to color skincare products. It produces a cool red hue, with undertones of blue that lead to a hint of purple.

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Overview

Red 33 (CI 17200) is a synthetic dye used in coloring skincare products. A dye is a colorant that can be dissolved in a liquid, such as water, whereas a pigment is a solid colorant that can only be suspended throughout a liquid.

This particular dye is also known as D&C Red 33 or Acid Red 33, and it is from the family of dyes known as azo dyes. Azo dyes contain the specific chemical group called an azo group, which consists of two nitrogen atoms doubly bonded to one another.

Red 33 (CI 17200) produces a cool red hue, with undertones of blue that lead to a hint of purple.