D&C Red No. 30 (Ci 73360)
What is D&C Red No. 30 (Ci 73360)?
D&C Red No. 30, identified as CI 73360, is a synthetic monoazo colorant with the chemical structure 1-[(2,4-dimethylphenyl)azo]-2-naphthalenol. Derived from petroleum-based intermediates through diazotization and coupling reactions, it belongs to the azo dye class valued for intense pigmentation. In cosmetics, it serves as a colorant in makeup products such as lipsticks, rouges, and eyeshadows, where it disperses uniformly in oils or solvents to deliver stable, vibrant red tones. This dye absorbs specific light wavelengths, reflecting red hues while resisting fading from light exposure or rubbing. Certified by the FDA for external cosmetic use following batch purity analysis for heavy metals and impurities, it ensures reliable performance in anhydrous or low-water formulations without altering product texture.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Imparts consistent, vibrant red shades for appealing product appearance.
Maintains color stability during application and wear.
Supports batch-to-batch uniformity in cosmetic manufacturing.
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 bold red tones in lip and cheek products. | People with known allergies to azo dyes. |
| Users with normal skin tolerance for certified colorants. | Those with highly sensitive or reactive skin. |
| Makeup wearers prioritizing visual vibrancy over minimalism. | Users preferring natural or dye-free formulations. |
Safety Notes
- FDA certifies batches for purity in cosmetic applications.
- May cause rare allergic contact dermatitis in susceptible individuals.
Frequently Asked Questions about D&C Red No. 30 (Ci 73360)
What is D&C Red No. 30 used for?
It acts as a colorant to provide bright red hues in makeup like lipsticks and blushes.
Is it safe for cosmetic use?
FDA certifies it for purity after batch testing for external applications.
Can it irritate skin?
Low irritation potential based on regulatory reviews, though allergies are possible.