Ingredient review
CI 75100
INCI: CI 75100
CI 75100 is a natural colorant that adds warm yellow-orange tones to cosmetics, but it offers no skincare benefits and may cause allergic reactions in sensitive individuals.
In plain English
CI 75100 is a natural pigment from the seeds of the achiote tree, also known as annatto. It gives a yellow to orange color to makeup and skincare products. While it is generally safe and widely used, it does not provide any skin benefits like hydration or anti-aging. Some people with very sensitive skin or allergies to annatto may experience irritation.
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
- natural
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
CI 75100 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 75100.
- 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 75100 is a natural colorant classified as a 'color index' (CI) number. It is derived from the seeds of the Bixa orellana tree, commonly known as annatto. The pigment is extracted from the seed coating and can range from bright yellow to deep orange depending on concentration and formulation.
How it works
In cosmetics, CI 75100 works purely as a colorant. It absorbs and reflects specific wavelengths of light to produce a yellow-orange hue. It does not interact with the skin's biology or provide any functional skincare benefits. It is typically suspended in oils or waxes to ensure even distribution in products like lipsticks or blushes.
Pros
Natural origin
Derived from the seeds of the achiote tree, it is a plant-based alternative to synthetic colorants, appealing to those seeking natural cosmetics.
Low irritation potential
For most people, CI 75100 is non-irritating and non-comedogenic, making it suitable for sensitive skin when used in low concentrations.
Cons and cautions
No skincare function
CI 75100 is purely a colorant and does not hydrate, soothe, or protect the skin. It adds no functional benefit beyond appearance.
Allergy risk
A small percentage of people may be allergic to annatto, leading to contact dermatitis or irritation, especially in leave-on products like lipsticks.
Best for
- Anyone looking for natural color in cosmetics
- People who prefer plant-derived ingredients over synthetic dyes
Use caution if
- Individuals with known allergies to annatto or Bixa orellana
Usage tips
Safety summary
CI 75100 is considered safe for use in cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has not specifically reviewed it, but annatto is generally recognized as safe as a food additive. Allergic reactions are rare but possible.
Research notes
Research on CI 75100 in cosmetics is limited. Most safety data comes from its use as a food colorant. Studies indicate low acute toxicity and no significant skin irritation in patch tests, though individual sensitivity exists.
Common label clues
- Typical concentration
- Typically used at very low concentrations (less than 1%) to achieve desired color
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other countries. In the US, it is listed as a color additive exempt from certification (21 CFR 73.2030).
- Common uses
- Lipsticks, Blushes, Eyeshadows, Soaps, Lotions
- Environmental note
- Annatto is a renewable plant resource, but large-scale cultivation may impact land use. Sourcing from sustainable farms is recommended.
Good to know
- CI 75100 is also used as a food colorant (E160b) in some regions.
- The color can vary from yellow to orange depending on the extraction method and concentration.
Common questions
What is CI 75100 in beauty products?
CI 75100 is a natural pigment from the seeds of the achiote tree, also known as annatto. It gives a yellow to orange color to makeup and skincare products. While it is generally safe and widely used, it does not provide any skin benefits like hydration or anti-aging. Some people with very sensitive skin or allergies to annatto may experience irritation.
What does CI 75100 do in a beauty product?
In cosmetics, CI 75100 works purely as a colorant. It absorbs and reflects specific wavelengths of light to produce a yellow-orange hue. It does not interact with the skin's biology or provide any functional skincare benefits. It is typically suspended in oils or waxes to ensure even distribution in products like lipsticks or blushes.
Is CI 75100 safe for most people?
CI 75100 is considered safe for use in cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has not specifically reviewed it, but annatto is generally recognized as safe as a food additive. Allergic reactions are rare but possible.
Who should be careful with CI 75100?
Individuals with known allergies to annatto or Bixa orellana
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.