Ingredient review
Tetrabutyl Phenyl Hydroxybenzoate
INCI: TETRABUTYL PHENYL HYDROXYBENZOATE
A synthetic UV filter that helps protect skin from sun damage and stabilizes other sunscreen ingredients.
In plain English
This is a man-made ingredient added to sunscreens and daily moisturizers to absorb harmful UV rays before they can damage your skin. It works like a tiny sponge that soaks up UV energy and turns it into harmless heat. Because it's oil-soluble, it spreads easily on skin and helps other sunscreen ingredients stay effective longer.
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
Tetrabutyl Phenyl Hydroxybenzoate 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 Tetrabutyl Phenyl Hydroxybenzoate.
- 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 synthetic organic compound belonging to the hydroxybenzoate family, designed specifically to absorb UVB and some UVA radiation. It is often used alongside other filters to broaden protection.
How it works
When applied to skin, the molecule absorbs UV photons and releases the energy as low-level heat, preventing the radiation from penetrating deeper layers. It also helps stabilize other UV filters like avobenzone, extending the product's sun protection duration.
Pros
Effective UVB shield
Absorbs UVB rays efficiently, reducing the risk of sunburn and long-term skin damage.
Boosts sunscreen stability
Helps prevent other UV filters from breaking down in sunlight, so your SPF protection lasts longer.
Cons and cautions
Narrow spectrum alone
On its own, it doesn't cover the full UVA range, so it's always paired with other filters for broad-spectrum protection.
Synthetic origin
Not derived from natural sources, which may be a drawback for those preferring plant-based or mineral ingredients.
Best for
- People looking for reliable UVB protection in daily sunscreens
- Those with sensitive skin who tolerate synthetic filters well
Use caution if
- Anyone seeking a purely mineral or natural sunscreen
Usage tips
Safety summary
Generally recognized as safe and low-irritation when used at approved concentrations. Not associated with significant skin sensitization or systemic toxicity in cosmetic use.
Research notes
Studies confirm its UVB absorption efficacy and photostabilizing benefits. More research is needed on long-term environmental impact, but human safety data is favorable.
Common label clues
- Typical concentration
- Up to 10% in leave-on products
- Regulatory status
- Approved as a UV filter in many countries including the EU and Asia; not currently approved by the FDA for use in the US.
- Common uses
- Sunscreens, Anti-aging creams, Moisturizers with SPF
- Environmental note
- Some synthetic UV filters have raised concerns about coral reef safety, but specific data on this ingredient is limited. Check local guidelines if you swim in sensitive marine areas.
Good to know
- Often listed near the middle of ingredient lists, indicating moderate concentration.
- Commonly combined with avobenzone or oxybenzone for broad-spectrum coverage.
Common questions
What is Tetrabutyl Phenyl Hydroxybenzoate in beauty products?
This is a man-made ingredient added to sunscreens and daily moisturizers to absorb harmful UV rays before they can damage your skin. It works like a tiny sponge that soaks up UV energy and turns it into harmless heat. Because it's oil-soluble, it spreads easily on skin and helps other sunscreen ingredients stay effective longer.
What does Tetrabutyl Phenyl Hydroxybenzoate do in a beauty product?
When applied to skin, the molecule absorbs UV photons and releases the energy as low-level heat, preventing the radiation from penetrating deeper layers. It also helps stabilize other UV filters like avobenzone, extending the product's sun protection duration.
Is Tetrabutyl Phenyl Hydroxybenzoate safe for most people?
Generally recognized as safe and low-irritation when used at approved concentrations. Not associated with significant skin sensitization or systemic toxicity in cosmetic use.
Who should be careful with Tetrabutyl Phenyl Hydroxybenzoate?
Anyone seeking a purely mineral or natural sunscreen
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.