Ingredient review
Bismuth Oxychloride
INCI: CI 77163
A safe, widely used mineral pigment that adds shimmer and coverage, but can cause irritation in sensitive skin or when used in high concentrations.
In plain English
Bismuth oxychloride is a synthetic mineral powder that gives makeup a pearly, shimmery finish. It's commonly found in pressed powders, eyeshadows, and blushes to add a soft glow and improve how smoothly the product applies. While generally safe, it can sometimes cause itching or irritation, especially on sensitive skin or in areas where the product is heavily layered.
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
Bismuth Oxychloride 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 Bismuth Oxychloride.
- 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
Bismuth oxychloride is a white, crystalline powder made from bismuth, oxygen, and chlorine. It is produced synthetically for use in cosmetics as a colorant and opacifier, giving products a pearlescent sheen.
How it works
In a cosmetic product, bismuth oxychloride particles reflect light, creating a shimmer or pearl effect. It also helps improve the texture and slip of powders, making them feel smoother on the skin. As an opacifier, it increases the coverage of foundations and powders.
Pros
Enhances shimmer and glow
Bismuth oxychloride gives a beautiful pearlescent finish that many people love for a luminous look.
Improves powder texture
It helps pressed powders feel silky and apply more evenly, reducing chalkiness.
Cons and cautions
Potential skin irritation
Some users report itching or stinging, especially on sensitive skin or when used in high amounts.
Can feel heavy
In high concentrations, it may make powders feel thick or cakey on the skin.
Best for
- People who enjoy a luminous, shimmery makeup finish
- Those looking for a powder that glides on smoothly
Use caution if
- Individuals with sensitive or reactive skin
- Anyone prone to itching or stinging from powder products
Usage tips
Safety summary
Bismuth oxychloride is generally considered safe for use in cosmetics at typical concentrations. However, it can cause skin irritation or itching in some individuals, particularly those with sensitive skin. Regulatory bodies like the FDA and EU CosIng list it as an approved colorant.
Research notes
Research indicates that bismuth oxychloride is not a significant skin sensitizer or carcinogen, but some studies note mild irritation potential. The Cosmetic Ingredient Review (CIR) panel has deemed it safe for use in cosmetics.
Common label clues
- Typical concentration
- 1% to 30% depending on desired shimmer effect
- Regulatory status
- Approved as a color additive in cosmetics in the US (FDA) and EU, with no specific restrictions on concentration.
- Common uses
- Pressed powders, Loose powders, Eyeshadows, Lipsticks, Nail polishes, Blushes
- Environmental note
- Bismuth is a byproduct of lead and copper mining, and its synthetic production has moderate environmental impact.
Good to know
- Bismuth oxychloride is often listed as CI 77163 on ingredient labels.
- It is different from bismuth subsalicylate (Pepto-Bismol) and is not used for medicinal purposes.
Common questions
What is Bismuth Oxychloride in beauty products?
Bismuth oxychloride is a synthetic mineral powder that gives makeup a pearly, shimmery finish. It's commonly found in pressed powders, eyeshadows, and blushes to add a soft glow and improve how smoothly the product applies. While generally safe, it can sometimes cause itching or irritation, especially on sensitive skin or in areas where the product is heavily layered.
What does Bismuth Oxychloride do in a beauty product?
In a cosmetic product, bismuth oxychloride particles reflect light, creating a shimmer or pearl effect. It also helps improve the texture and slip of powders, making them feel smoother on the skin. As an opacifier, it increases the coverage of foundations and powders.
Is Bismuth Oxychloride safe for most people?
Bismuth oxychloride is generally considered safe for use in cosmetics at typical concentrations. However, it can cause skin irritation or itching in some individuals, particularly those with sensitive skin. Regulatory bodies like the FDA and EU CosIng list it as an approved colorant.
Who should be careful with Bismuth Oxychloride?
Individuals with sensitive or reactive skin Anyone prone to itching or stinging from powder products
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.