Ingredient review
Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer
INCI: SUCROSE BENZOATE/SUCROSE ACETATE ISOBUTYRATE COPOLYMER
A sugar-derived film former that helps products stay put and resist water, but may feel slightly tacky on some skin types.
In plain English
This ingredient is a modified sugar molecule that forms a thin, flexible film on your skin or hair. Think of it like a clear, invisible shield that helps makeup last longer, sunscreen stay effective even when you sweat, or hairspray hold your style. It's commonly used in waterproof and long-wear products because it resists water and oil.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer 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 Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer.
- 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
A semi-synthetic polymer made by chemically modifying sucrose (table sugar) with benzoic acid and acetic/isobutyric acids. It is a clear, viscous liquid that dries to a flexible, non-tacky film.
How it works
When applied, the copolymer molecules spread evenly and link together as the solvent evaporates, forming a continuous film. This film physically blocks water and oil from penetrating, helping active ingredients (like sunscreen filters) stay on the skin longer and preventing makeup from smudging or fading.
Pros
Excellent water resistance
Helps sunscreen and makeup stay effective even when you sweat or swim, reducing the need for frequent reapplication.
Flexible, non-cracking film
Unlike some older film formers, this copolymer dries to a flexible layer that moves with your skin, so it won't flake or feel stiff.
Cons and cautions
Can feel tacky on oily skin
On very oily skin, the film may mix with excess sebum and create a slightly sticky or heavy sensation.
Requires double cleansing to remove
Because it's water-resistant, you'll need an oil-based cleanser or micellar water to fully remove it, which can be inconvenient.
Best for
- People who need long-wearing, water-resistant makeup or sunscreen
- Those with normal to dry skin who want a flexible film that doesn't crack
Use caution if
- Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming products
Usage tips
Safety summary
Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive skin may experience mild tackiness or clogging if not properly removed.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel and other bodies have concluded that this ingredient is safe for use in leave-on and rinse-off products. Studies show it does not cause significant skin irritation or sensitization.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU (CosIng), and many other regions. No concentration restrictions are typically imposed.
- Common uses
- Sunscreens, Waterproof mascaras, Long-wear foundations, Hair styling products, Lip products
- Environmental note
- As a semi-synthetic polymer, it is not readily biodegradable. However, it is not known to bioaccumulate. Always follow local disposal guidelines.
Good to know
- This ingredient is often used in combination with other film formers to fine-tune water resistance and feel.
- It is considered safe for use in cosmetics by major regulatory bodies, including the FDA and the European Commission.
Common questions
What is Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer in beauty products?
This ingredient is a modified sugar molecule that forms a thin, flexible film on your skin or hair. Think of it like a clear, invisible shield that helps makeup last longer, sunscreen stay effective even when you sweat, or hairspray hold your style. It's commonly used in waterproof and long-wear products because it resists water and oil.
What does Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer do in a beauty product?
When applied, the copolymer molecules spread evenly and link together as the solvent evaporates, forming a continuous film. This film physically blocks water and oil from penetrating, helping active ingredients (like sunscreen filters) stay on the skin longer and preventing makeup from smudging or fading.
Is Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer safe for most people?
Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive skin may experience mild tackiness or clogging if not properly removed.
Who should be careful with Sucrose Benzoate/Sucrose Acetate Isobutyrate Copolymer?
Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming 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.