Ingredient review
Benzotriazolyl Dodecyl p-Cresol
INCI: POLY(BENZOTRIAZOLYLHYDROXYPHENETHYL METHACRYLATE)
A reliable, photostable sunscreen ingredient that offers broad-spectrum protection without the white cast of some mineral filters.
In plain English
This is a synthetic sunscreen ingredient that works like a shield on your skin. It absorbs and scatters both UVA (aging) and UVB (burning) rays, helping to prevent sun damage. Unlike some chemical sunscreens, it stays stable in sunlight and doesn't break down quickly, so your protection lasts longer. It's often used in combination with other filters to provide balanced coverage.
Quick decision guide
Easy yes for most routines
Benzotriazolyl Dodecyl p-Cresol 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 Benzotriazolyl Dodecyl p-Cresol.
- 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
strongThere is a stronger practical or research basis for the ingredient role described here.
What it is
A synthetic organic compound that acts as a broad-spectrum UV filter. It is a polymer, meaning it's made of large molecules that sit on the skin's surface rather than being absorbed deeply.
How it works
It absorbs UV radiation and converts it into harmless heat, while also scattering some light like a physical blocker. Because it's a polymer, it forms a film on the skin that resists rubbing off and stays effective for longer.
Pros
Stable in sunlight
Unlike some chemical filters that break down quickly, this ingredient stays effective for hours, meaning you don't have to reapply as often.
Gentle on skin
It has a very low irritation and allergy risk, making it suitable for sensitive skin types.
Cons and cautions
Possible white cast
On darker skin tones, it can leave a subtle whitish or ashy residue, similar to mineral sunscreens.
Texture can be thick
In some formulations, it may feel heavier or less spreadable than lighter chemical filters.
Best for
- Anyone looking for reliable sun protection
- People with sensitive skin who react to other chemical filters
Use caution if
- Those who prefer purely mineral sunscreens
- Individuals with known allergy to benzotriazole compounds (rare)
Usage tips
Safety summary
Considered safe for use in cosmetics at concentrations up to 10%. It has a low irritation and sensitization profile. Not approved in the US, but widely used internationally with a strong safety record.
Research notes
Multiple studies confirm its efficacy as a broad-spectrum UV filter and its high photostability. It is well-tolerated on skin and does not significantly penetrate the skin barrier.
Common label clues
- Typical concentration
- Up to 10% in leave-on products
- Regulatory status
- Approved as a UV filter in the EU, Australia, and many other regions. Not currently approved by the US FDA for use in sunscreens.
- Common uses
- Sunscreens, Moisturizers with SPF, BB creams, Makeup with sun protection
- Environmental note
- Studies suggest it has low potential for bioaccumulation and is considered relatively safe for aquatic life compared to some other chemical filters.
Good to know
- This ingredient is approved for use in sunscreens in many countries, including the EU and Australia, but is not yet FDA-approved in the US.
- It is often listed under the trade name Tinosorb M.
Common questions
What is Benzotriazolyl Dodecyl p-Cresol in beauty products?
This is a synthetic sunscreen ingredient that works like a shield on your skin. It absorbs and scatters both UVA (aging) and UVB (burning) rays, helping to prevent sun damage. Unlike some chemical sunscreens, it stays stable in sunlight and doesn't break down quickly, so your protection lasts longer. It's often used in combination with other filters to provide balanced coverage.
What does Benzotriazolyl Dodecyl p-Cresol do in a beauty product?
It absorbs UV radiation and converts it into harmless heat, while also scattering some light like a physical blocker. Because it's a polymer, it forms a film on the skin that resists rubbing off and stays effective for longer.
Is Benzotriazolyl Dodecyl p-Cresol safe for most people?
Considered safe for use in cosmetics at concentrations up to 10%. It has a low irritation and sensitization profile. Not approved in the US, but widely used internationally with a strong safety record.
Who should be careful with Benzotriazolyl Dodecyl p-Cresol?
Those who prefer purely mineral sunscreens Individuals with known allergy to benzotriazole compounds (rare)
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.