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CI 15510.

Optional CAS 633-96-5 / COLORANT

CI 15510, also known as D&C Orange No. 4, is a synthetic cosmetic colorant primarily used to impart an orange hue. It is globally approved for use in various personal care products.

Summary

Colorant

Science

Mechanism of Action

Its primary function is to provide an orange color to cosmetic formulations, skin, nails, and hair. It can also act as an excipient in perfume oils and flavors.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 2 – 11
0 7 14

Stability

Aqueous solutions remain stable for at least 72 hours, with suspensions stable for up to 11 days. It maintains stability across a broad pH range of 2 to 11.

Conflicts

  • May not adhere effectively in water-soluble creams, lotions, gels, or serums.
  • Not suitable for direct incorporation into makeup products.
  • Requires a UV filter in water-soluble formulations to prevent color fading.
  • Prohibited for use in products applied to the immediate eye area.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
6%
Sensitization risk Unknown

Approved for cosmetic use in the EU and US (D&C Orange No. 4), with an FDA limit of 6.00% for skin products. The SCCS found a low margin of safety for its use as a hair dye at 0.5%, and it is not permitted near the eyes.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Optional

CI 15510 is an approved cosmetic colorant that provides an orange hue, requiring specific formulation considerations and adhering to concentration limits and usage restrictions.

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