Ingredient review
Diethylhexyl Butamido Triazone
INCI: Diethylhexyl Butamido Triazone
A highly effective, photostable sunscreen ingredient that provides broad-spectrum protection without the greasy feel of some older filters.
In plain English
Diethylhexyl Butamido Triazone is a man-made sunscreen ingredient that absorbs ultraviolet (UV) light from the sun, especially the UVA rays that cause aging and the UVB rays that cause burning. It is very stable in sunlight, meaning it doesn't break down quickly, so it keeps protecting your skin for longer. It is often used in combination with other sunscreens to create a high, balanced SPF.
Review score
Safety, usefulness, and evidence
Strong fit for many routines
The evidence base is relatively strong for its common cosmetic role.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- strong
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Easy yes for most routines
Diethylhexyl Butamido Triazone 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 Diethylhexyl Butamido Triazone.
- 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 belonging to the triazone family, designed specifically as a UV filter for cosmetic sunscreens.
How it works
It works by absorbing UV radiation and converting it into harmless heat, which is then released from the skin. Its molecular structure is very efficient at absorbing both UVA and UVB rays, and it is highly photostable, meaning it does not degrade rapidly under sunlight.
Pros
Excellent photostability
Unlike some chemical filters that break down in sunlight, this ingredient stays effective longer, so you don't have to reapply as often for the same level of protection.
Lightweight feel
It doesn't leave a heavy, sticky residue on the skin, making it comfortable for daily wear under makeup or alone.
Cons and cautions
Not available in the US
This ingredient is not approved by the FDA, so you won't find it in sunscreens sold in the United States, limiting access for American consumers.
Synthetic origin
It is a man-made chemical, which may be a concern for people seeking only naturally-derived ingredients in their skincare.
Best for
- Anyone looking for high, reliable sun protection in a lightweight formula
- People with oily or combination skin who dislike heavy, greasy sunscreens
Use caution if
- Those who prefer only mineral (zinc oxide/titanium dioxide) sunscreens
Usage tips
Safety summary
Diethylhexyl Butamido Triazone is considered safe and effective for use in sunscreens by regulatory bodies in Europe and Asia. It has low skin irritation and allergy potential. Its main limitation is lack of FDA approval in the US.
Research notes
Multiple studies confirm its high photostability and broad-spectrum efficacy. It is well-tolerated in human patch tests. Research continues on its environmental fate, but current data does not indicate significant ecotoxicity.
Common label clues
- Typical concentration
- Up to 10% in finished products
- Regulatory status
- Approved in the EU and many other countries as a UV filter up to 10% concentration. Not approved by the US FDA as of 2025.
- Common uses
- Sunscreens, Daily moisturizers with SPF, Makeup with sun protection
- Environmental note
- Studies on environmental impact are limited, but it is not known to be a major coral reef toxin like some other chemical filters.
Good to know
- Often combined with other UV filters like Tinosorb S or Uvinul A Plus for even broader protection.
- Commonly used in European and Asian sunscreens where it is approved.
Common questions
What is Diethylhexyl Butamido Triazone in beauty products?
Diethylhexyl Butamido Triazone is a man-made sunscreen ingredient that absorbs ultraviolet (UV) light from the sun, especially the UVA rays that cause aging and the UVB rays that cause burning. It is very stable in sunlight, meaning it doesn't break down quickly, so it keeps protecting your skin for longer. It is often used in combination with other sunscreens to create a high, balanced SPF.
What does Diethylhexyl Butamido Triazone do in a beauty product?
It works by absorbing UV radiation and converting it into harmless heat, which is then released from the skin. Its molecular structure is very efficient at absorbing both UVA and UVB rays, and it is highly photostable, meaning it does not degrade rapidly under sunlight.
Is Diethylhexyl Butamido Triazone safe for most people?
Diethylhexyl Butamido Triazone is considered safe and effective for use in sunscreens by regulatory bodies in Europe and Asia. It has low skin irritation and allergy potential. Its main limitation is lack of FDA approval in the US.
Who should be careful with Diethylhexyl Butamido Triazone?
Those who prefer only mineral (zinc oxide/titanium dioxide) sunscreens
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.