D&C Red No. 33 (Ci 17200)

What is D&C Red No. 33 (Ci 17200)?

D&C Red No. 33, identified as CI 17200, is a synthetic monoazo dye derived from coal tar intermediates through diazotization and coupling reactions. This water-soluble color additive belongs to the certified D&C series approved for specific cosmetic applications, particularly those involving mucosal contact like lip products and oral care items, as well as hair colorants. In formulations, it functions by dissolving in aqueous or alcoholic bases to absorb specific wavelengths of visible light, imparting a bright pinkish-red shade. Its stability across pH ranges supports use in shampoos, conditioners, and semi-permanent hair dyes, where it deposits color onto hair shafts or fibers for temporary enhancement without penetrating deeply. Regulatory bodies specify purity standards to ensure safety in rinse-off and leave-on products.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-4 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Colorant
Provides or corrects color using dyes or pigments, helping achieve a consistent shade and visual appearance across batches and throughout wear.
Hair dyeing
Supports chemical color change of hair (e.g., oxidative dye development or bleaching), enabling shade transformation through controlled reactions on the fiber.
Hair colorant
Delivers hair color through dyes and/or pigments (direct or oxidative systems), producing a visible shade change and supporting coverage and longevity.

Benefits

Delivers uniform red pigmentation for reliable visual appeal in cosmetics.

Enhances product aesthetics with stable color in varying conditions.

Supports temporary hair shading in dyes and rinses for customized looks.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Users wanting consistent color in lip or oral cosmetics.
Those with known allergies to azo dyes.
Individuals using semi-permanent hair color products.
People with sensitive skin prone to dye reactions.
People seeking non-comedogenic coloring options.
Individuals experiencing irritation from certified colorants.

Safety Notes

  • Certified by regulators for approved cosmetic uses with purity requirements.
  • Associated with low comedogenic potential in formulations.

Frequently Asked Questions about D&C Red No. 33 (Ci 17200)

What is D&C Red No. 33 used for?

Primarily as a colorant in lip products, oral care, and hair dyes for red hues.

Is it safe for skin?

Approved for cosmetics with regulatory purity standards; low irritation for most.

Does it cause breakouts?

Non-comedogenic rating indicates low risk of pore clogging.