Ingredient review
Bismuth Subgallate
INCI: Bismuth Subgallate
Bismuth Subgallate is a synthetic colorant and mild skin protectant, generally safe in low concentrations but with limited cosmetic research.
In plain English
Bismuth Subgallate is a man-made ingredient that gives products a yellow-green tint and can help soothe minor skin irritation. It's most often found in deodorants and color cosmetics, but it's not a major active ingredient in modern skincare.
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 Subgallate 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 Subgallate.
- 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 Subgallate is a bismuth salt of gallic acid, produced synthetically. It appears as a fine, yellow-green powder and is used primarily for its color and mild astringent properties.
How it works
In cosmetics, Bismuth Subgallate works by providing a yellow-green pigment that can be used to adjust product color. It also has mild astringent and skin-protectant properties, meaning it can help reduce minor skin irritation and create a protective barrier on the skin's surface.
Pros
Gentle colorant
Provides a subtle yellow-green tint without the harshness of some synthetic dyes, making it suitable for sensitive skin formulations.
Mild skin protection
Has a long history of use as a skin protectant in medicinal products, offering a soothing effect for minor irritations.
Cons and cautions
Limited cosmetic research
Most studies focus on its medicinal use, not its long-term effects in daily skincare or makeup products.
Rare sensitivity risk
While generally safe, a small number of people may experience skin irritation or allergic reactions, especially with prolonged use.
Best for
- People looking for a gentle colorant in deodorants or makeup
- Those with sensitive skin who want a mild, non-irritating pigment
Use caution if
- Individuals with known bismuth allergies or sensitivities
Usage tips
Safety summary
Bismuth Subgallate is considered safe for cosmetic use at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has not raised major concerns, but users with known bismuth allergies should avoid it.
Research notes
Research on Bismuth Subgallate in cosmetics is limited. Most evidence comes from its medicinal use as a skin protectant and astringent. No major studies have evaluated its long-term cosmetic safety or efficacy.
Common label clues
- Typical concentration
- Typically used at 0.1% to 2% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU and US, with concentration limits in some regions. Not a restricted ingredient but should be used according to good manufacturing practices.
- Common uses
- Color cosmetics, Deodorants, Skin care formulations
- Environmental note
- Bismuth is a heavy metal, but in the small amounts used in cosmetics, environmental impact is considered low. However, mining and processing of bismuth can have ecological effects.
Good to know
- Bismuth Subgallate is also used in some deodorants for its mild astringent properties.
- It is not a common ingredient in modern skincare serums or moisturizers.
Common questions
What is Bismuth Subgallate in beauty products?
Bismuth Subgallate is a man-made ingredient that gives products a yellow-green tint and can help soothe minor skin irritation. It's most often found in deodorants and color cosmetics, but it's not a major active ingredient in modern skincare.
What does Bismuth Subgallate do in a beauty product?
In cosmetics, Bismuth Subgallate works by providing a yellow-green pigment that can be used to adjust product color. It also has mild astringent and skin-protectant properties, meaning it can help reduce minor skin irritation and create a protective barrier on the skin's surface.
Is Bismuth Subgallate safe for most people?
Bismuth Subgallate is considered safe for cosmetic use at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has not raised major concerns, but users with known bismuth allergies should avoid it.
Who should be careful with Bismuth Subgallate?
Individuals with known bismuth allergies or sensitivities
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.