Ingredient review
Red 33
INCI: CI 17200
A widely used synthetic red dye that is generally safe in cosmetics but offers no skincare benefits.
In plain English
CI 17200, also known as Red 33, is a man-made red dye added to cosmetics to give them color. It doesn't do anything for your skin—it's purely for appearance. Regulatory bodies like the FDA have approved it for use in cosmetics, but some people may experience irritation, especially if they have sensitive skin or allergies to synthetic dyes.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Red 33 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Red 33.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
CI 17200 is a synthetic azo dye that produces a red to magenta color. It is derived from petroleum and is commonly used in cosmetics, personal care products, and even some medications.
How it works
In a cosmetic product, CI 17200 simply imparts color. It does not interact with the skin or provide any functional benefit beyond aesthetics. It is water-soluble and stable under normal product conditions.
Pros
Vibrant color
Provides a bright, consistent red shade that is stable in many cosmetic formulations.
Regulatory approval
Approved by the FDA and other global regulators for use in cosmetics, with a long history of safe use.
Cons and cautions
No skincare benefit
Offers no moisturizing, anti-aging, or protective properties—it's purely cosmetic.
Potential irritant
May cause allergic reactions or irritation in people with sensitive skin or dye allergies.
Best for
- Anyone looking for colorful cosmetics
- People without known sensitivities to synthetic dyes
Use caution if
- Individuals with known allergies or sensitivities to synthetic dyes
- Those seeking fully natural or organic cosmetics
Usage tips
Safety summary
CI 17200 is considered safe for use in cosmetics at typical concentrations by major regulatory agencies. However, it can cause allergic reactions in sensitive individuals and offers no skincare benefits.
Research notes
Studies on CI 17200 focus on its safety as a color additive. The Cosmetic Ingredient Review (CIR) panel has concluded it is safe for use in cosmetics when formulated to be non-irritating. No significant evidence links it to long-term health risks at cosmetic exposure levels.
Common label clues
- Typical concentration
- Typically used at very low concentrations, often less than 1%
- Regulatory status
- Approved by the FDA for use in cosmetics (except in eye area products) and by the EU Cosmetics Regulation. Always check local regulations as restrictions may vary.
- Common uses
- Lipsticks, Blushes, Bath products, Nail polishes, Eyeliners
- Environmental note
- As a synthetic dye, CI 17200 is not biodegradable and may contribute to environmental pollution if not properly disposed of. Some manufacturers are moving toward natural alternatives.
Good to know
- CI 17200 is also used in some medications and food products, though under stricter regulations.
- It is often listed as D&C Red No. 33 in the US and as CI 17200 internationally.
Common questions
What is Red 33 in beauty products?
CI 17200, also known as Red 33, is a man-made red dye added to cosmetics to give them color. It doesn't do anything for your skin—it's purely for appearance. Regulatory bodies like the FDA have approved it for use in cosmetics, but some people may experience irritation, especially if they have sensitive skin or allergies to synthetic dyes.
What does Red 33 do in a beauty product?
In a cosmetic product, CI 17200 simply imparts color. It does not interact with the skin or provide any functional benefit beyond aesthetics. It is water-soluble and stable under normal product conditions.
Is Red 33 safe for most people?
CI 17200 is considered safe for use in cosmetics at typical concentrations by major regulatory agencies. However, it can cause allergic reactions in sensitive individuals and offers no skincare benefits.
Who should be careful with Red 33?
Individuals with known allergies or sensitivities to synthetic dyes Those seeking fully natural or organic cosmetics
Research sources
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.