Ingredient review
CI 16230
INCI: CI 16230
A widely used synthetic red pigment that is generally safe in cosmetics but may cause allergic reactions in sensitive individuals.
In plain English
CI 16230 is a synthetic red dye, also known as Red 40 Lake. It's used to give cosmetics like lipsticks, blushes, and eye shadows their red or pink color. It's made from petroleum and is approved for use in many countries, but some people may experience skin irritation or allergic reactions.
Review score
Safety, usefulness, and evidence
Useful in the right context, but not low-maintenance
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
Read the cautions before using
CI 16230 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 CI 16230.
- 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 16230 is a synthetic organic pigment from the azo dye family. It is the lake form of Allura Red AC (FD&C Red 40), meaning it is made by precipitating the dye onto an insoluble base (like aluminum hydroxide) to create a stable, water-insoluble pigment.
How it works
In cosmetics, CI 16230 works by absorbing and reflecting specific wavelengths of light, giving the product a red or pink color. Because it is insoluble in water and oil, it stays suspended in the formula and does not bleed or migrate, providing long-lasting color.
Pros
Vibrant color
Delivers a bright, consistent red or pink shade that stays true in different lighting.
Stable and long-lasting
The lake form resists bleeding and fading, so your makeup stays looking fresh longer.
Cons and cautions
Potential allergen
Can cause allergic contact dermatitis in some people, leading to redness, itching, or swelling on the skin.
Synthetic origin
Derived from petroleum, which may be a concern for those seeking natural or sustainable beauty products.
Best for
- Anyone looking for vibrant red/pink color in cosmetics
- People without known sensitivity to synthetic dyes
Use caution if
- Individuals with known allergies to azo dyes or Red 40
- Those seeking exclusively natural or plant-based colorants
Usage tips
Safety summary
CI 16230 is considered safe for use in cosmetics at typical concentrations by major regulatory bodies. However, it can cause allergic reactions in sensitive individuals. Avoid if you have a known sensitivity to azo dyes.
Research notes
Studies on topical use show low irritation potential in the general population. Oral ingestion studies link Red 40 to hyperactivity in children, but this is not relevant for cosmetic use. Dermal sensitization is rare but documented.
Common label clues
- Typical concentration
- Typically 0.1% to 5% depending on desired shade intensity
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU (as CI 16230), and many other countries, subject to purity and labeling requirements.
- Common uses
- Lipsticks, Blushes, Eye shadows, Nail polishes, Bath products
- Environmental note
- As a synthetic pigment from petroleum, its production has a carbon footprint. It is not biodegradable and may accumulate in the environment.
Good to know
- CI 16230 is the same pigment as FD&C Red 40 Lake, which is approved by the FDA for use in cosmetics and drugs.
- It is not the same as Red 40 dye used in food; the lake form is insoluble and designed for topical use.
Common questions
What is CI 16230 in beauty products?
CI 16230 is a synthetic red dye, also known as Red 40 Lake. It's used to give cosmetics like lipsticks, blushes, and eye shadows their red or pink color. It's made from petroleum and is approved for use in many countries, but some people may experience skin irritation or allergic reactions.
What does CI 16230 do in a beauty product?
In cosmetics, CI 16230 works by absorbing and reflecting specific wavelengths of light, giving the product a red or pink color. Because it is insoluble in water and oil, it stays suspended in the formula and does not bleed or migrate, providing long-lasting color.
Is CI 16230 safe for most people?
CI 16230 is considered safe for use in cosmetics at typical concentrations by major regulatory bodies. However, it can cause allergic reactions in sensitive individuals. Avoid if you have a known sensitivity to azo dyes.
Who should be careful with CI 16230?
Individuals with known allergies to azo dyes or Red 40 Those seeking exclusively natural or plant-based colorants
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.