Ingredient review
CI 18690
INCI: CI 18690
CI 18690 is a synthetic red pigment that adds color to makeup, but it offers no skincare benefits and may cause sensitivity in very rare cases.
In plain English
CI 18690 is a man-made colorant that gives a red or pink tint to cosmetics like lipstick and blush. It doesn't treat or improve your skin—it's purely for appearance. Think of it like food coloring for your makeup.
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 18690 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 18690.
- 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 18690 is a synthetic organic pigment, often an aluminum lake of a red dye, approved for use in cosmetics to impart color.
How it works
It works by reflecting and absorbing specific wavelengths of light, making the product appear red or pink. It sits on the surface of the skin or nail and does not penetrate deeply.
Pros
Vibrant color payoff
Provides a consistent, bright red or pink shade that stays true in various lighting conditions.
Good stability
Resists fading from light or heat, so your makeup color lasts longer on the shelf and on your skin.
Cons and cautions
No skin benefit
It's purely decorative—does not moisturize, protect, or treat the skin in any way.
Rare allergy risk
A small number of people may experience redness, itching, or irritation, especially with repeated use on sensitive areas like lips.
Best for
- Anyone looking for colorful makeup options
- People who want a wide shade range in their cosmetics
Use caution if
- Individuals with known allergies to synthetic colorants or lakes
Usage tips
Safety summary
CI 18690 is considered safe for cosmetic use at typical concentrations. Rare allergic reactions have been reported, but it is generally non-irritating and non-comedogenic.
Research notes
Safety assessments by cosmetic ingredient review panels and regulatory bodies support its use. Most data focus on skin sensitization potential, which is low for the general population.
Common label clues
- Typical concentration
- Typically used at very low concentrations, often less than 1%
- Regulatory status
- Approved for use in cosmetics in the EU, US (FDA), and many other regions, subject to purity and concentration limits.
- Common uses
- Lipsticks, Blushes, Eyeshadows, Nail polishes
- Environmental note
- As a synthetic pigment, its production involves chemical synthesis and may have environmental impacts if not properly managed during manufacturing.
Good to know
- CI numbers are standard color index identifiers used globally to name pigments and dyes.
- This pigment is often combined with other colorants to create custom shades.
Common questions
What is CI 18690 in beauty products?
CI 18690 is a man-made colorant that gives a red or pink tint to cosmetics like lipstick and blush. It doesn't treat or improve your skin—it's purely for appearance. Think of it like food coloring for your makeup.
What does CI 18690 do in a beauty product?
It works by reflecting and absorbing specific wavelengths of light, making the product appear red or pink. It sits on the surface of the skin or nail and does not penetrate deeply.
Is CI 18690 safe for most people?
CI 18690 is considered safe for cosmetic use at typical concentrations. Rare allergic reactions have been reported, but it is generally non-irritating and non-comedogenic.
Who should be careful with CI 18690?
Individuals with known allergies to synthetic colorants or lakes
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.