Ingredient review

Acid Red 92

INCI: Acid Red 92

A widely used synthetic dye that adds vibrant red color to cosmetics, but may cause irritation in sensitive individuals.

beautyskincarecolorant

In plain English

Acid Red 92 is a man-made dye that gives a bright red or pink color to makeup products like lipstick and blush. It's approved for use in cosmetics in many countries, but some people with very sensitive skin might find it irritating. It doesn't have any skincare benefits—it's purely for color.

Quick decision guide

Useful, but context matters

Acid Red 92 is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Acid Red 92.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A synthetic organic dye from the xanthene family, also known as CI 45410 or Eosin Y. It is produced through chemical synthesis and is used to impart a red or pink hue to cosmetic products.

How it works

It works by absorbing and reflecting specific wavelengths of light, which creates the visible red color. In a product, it is mixed into the base (like a lipstick wax or powder) to evenly distribute the color.

Pros

Vibrant color payoff

Provides a bright, consistent red shade that stays true in various lighting conditions.

Regulatory approval

Approved by the FDA and EU for use in cosmetics, meaning it has passed safety reviews for typical use.

Cons and cautions

Potential irritant

Can cause contact dermatitis or irritation in people with very sensitive skin or allergies to synthetic dyes.

No skincare benefit

Purely cosmetic; it adds no moisturizing, protective, or active skincare properties to a product.

Best for

  • Anyone looking for a bold red color in their makeup
  • People without known sensitivities to synthetic dyes

Use caution if

  • Individuals with known allergies or sensitivities to synthetic dyes or eosin-based compounds

Usage tips

Check ingredient labels if you have a history of reactions to red dyes.
Patch test a new product containing this dye on a small area of skin before full use.

Safety summary

Generally considered safe for cosmetic use at typical concentrations, but may cause allergic reactions in sensitive individuals. Regulatory bodies have set limits to ensure safety.

Research notes

Studies confirm low acute toxicity and low skin irritation in most people, though rare allergic contact dermatitis has been reported. Long-term safety data is limited but no major concerns have emerged.

Common label clues

Typical concentration
Typically used at very low concentrations, often less than 1%
Regulatory status
Approved for use in cosmetics in the US (FDA) and EU (as CI 45410) with concentration limits in some product types.
Common uses
Lipsticks, Blushes, Eyeshadows, Nail polishes
Environmental note
As a synthetic dye, it is not biodegradable and may accumulate in water systems if not properly filtered during manufacturing.

Good to know

  • Acid Red 92 is sometimes listed as CI 45410 on labels.
  • It is different from natural red dyes like carmine, which comes from insects.

Common questions

What is Acid Red 92 in beauty products?

Acid Red 92 is a man-made dye that gives a bright red or pink color to makeup products like lipstick and blush. It's approved for use in cosmetics in many countries, but some people with very sensitive skin might find it irritating. It doesn't have any skincare benefits—it's purely for color.

What does Acid Red 92 do in a beauty product?

It works by absorbing and reflecting specific wavelengths of light, which creates the visible red color. In a product, it is mixed into the base (like a lipstick wax or powder) to evenly distribute the color.

Is Acid Red 92 safe for most people?

Generally considered safe for cosmetic use at typical concentrations, but may cause allergic reactions in sensitive individuals. Regulatory bodies have set limits to ensure safety.

Who should be careful with Acid Red 92?

Individuals with known allergies or sensitivities to synthetic dyes or eosin-based compounds

Research sources

FDA Color Additive Status ListOpenEuropean Commission CosIng DatabaseOpenPubMed - Contact dermatitis from eosinOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.