FD&C Yellow No. 6 (Ci 15985)
What is FD&C Yellow No. 6 (Ci 15985)?
FD&C Yellow No. 6, also known as CI 15985 or Sunset Yellow FCF, is a synthetic organic colorant belonging to the azo dye family. Chemically, it is the disodium salt of 6-hydroxy-5-[(4-sulfophenyl)azo]-2-naphthalenesulfonic acid, produced through diazotization and coupling reactions. Certified by the FDA for use in drugs, cosmetics, and food, it appears as an orange-yellow powder soluble in water. In cosmetics, it functions primarily as a colorant in rinse-off and leave-on products like lipsticks, shampoos, lotions, and nail polishes. It imparts a stable, vibrant yellow hue by absorbing specific light wavelengths, ensuring uniform color distribution and batch-to-batch consistency. Its water solubility allows even dispersion in aqueous-based formulas, while lakes (aluminum salts) enable use in oil-based products.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Enhances product appearance with consistent, vibrant yellow tones.
Supports visual uniformity across manufacturing batches.
Allows customization of shades in makeup and personal care items.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals seeking colorful cosmetics like lip products or hair dyes. | Those with known sensitivity to azo dyes. |
| Users preferring water-soluble pigments for lotions and gels. | Individuals prone to contact allergies or dermatitis. |
| People with normal skin looking for aesthetic enhancement without pore-clogging. | People concerned about potential impurities in synthetic colorants. |
Safety Notes
- Approved for cosmetic use by FDA and evaluated as safe by CIR when formulated properly.
- May contain trace impurities; choose products adhering to good manufacturing practices.
Frequently Asked Questions about FD&C Yellow No. 6 (Ci 15985)
Is FD&C Yellow No. 6 safe for skin?
Regulatory reviews like those from FDA and CIR deem it safe for cosmetic use when properly formulated.
What products commonly contain it?
Found in lipsticks, shampoos, lotions, and other colored personal care items.
Does it clog pores?
Rated non-comedogenic, suitable for most skin types without pore concerns.