Ingredient review
Ethylhexyl Triazone
INCI: Ethylhexyl Triazone
A powerful, photostable UVB filter that provides reliable sunburn protection without the greasy feel of older sunscreens.
In plain English
Ethylhexyl Triazone is a synthetic sunscreen ingredient that absorbs UVB rays—the kind that cause sunburn and contribute to skin cancer. It's very stable in sunlight, meaning it doesn't break down quickly, so your protection lasts longer. It's also lightweight and doesn't leave a heavy white cast, making it popular in modern sunscreens.
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
Ethylhexyl 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 Ethylhexyl 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 specifically designed to absorb ultraviolet B (UVB) radiation. It belongs to the triazine family of UV filters and is known for its high molar extinction coefficient, meaning it can absorb a lot of UV energy per molecule.
How it works
When applied to the skin, Ethylhexyl Triazone molecules absorb UVB photons and convert them into harmless heat energy, preventing the UV radiation from penetrating the skin and causing damage. Its high photostability ensures it remains effective for longer periods under sun exposure.
Pros
High UVB absorption efficiency
Ethylhexyl Triazone is one of the most potent UVB filters available, meaning you need less of it to achieve high SPF, which helps keep formulas light and comfortable.
Excellent photostability
Unlike some older filters, this ingredient doesn't degrade quickly in sunlight, so your sun protection remains effective for longer periods without frequent reapplication.
Cons and cautions
No UVA protection
This filter only blocks UVB rays, so it must be combined with UVA filters like Avobenzone or Zinc Oxide to provide broad-spectrum protection against aging and deeper skin damage.
Not FDA-approved in the US
Ethylhexyl Triazone is not currently approved by the U.S. Food and Drug Administration for use in sunscreens, so you won't find it in American products, though it is widely used in Europe and Asia.
Best for
- Anyone seeking reliable UVB protection in a sunscreen
- People who prefer lightweight, non-greasy sunscreens
Use caution if
- Those looking for a single-ingredient broad-spectrum sunscreen (must be paired with UVA filters)
Usage tips
Safety summary
Ethylhexyl Triazone is considered safe for use in sunscreens by major regulatory bodies outside the US. It has low skin penetration, low irritation potential, and is not classified as an endocrine disruptor based on current evidence.
Research notes
Multiple studies confirm its high UVB absorption efficiency and photostability. The SCCS and other authorities have reviewed safety data and approved its use up to 5%. Research continues on its environmental impact.
Common label clues
- Typical concentration
- Up to 5% in the EU and other regulated markets
- Regulatory status
- Approved in the EU, Australia, Japan, and many other countries at concentrations up to 5%. Not approved by the FDA for use in the United States.
- Common uses
- Sunscreens, Daily moisturizers with SPF, BB creams, Makeup with sun protection
- Environmental note
- Studies suggest Ethylhexyl Triazone has low potential for bioaccumulation and is less likely to harm marine life compared to some other UV filters, but more research is ongoing.
Good to know
- Ethylhexyl Triazone is often listed under the trade name Uvinul T 150.
- It is considered safe by the European Commission's Scientific Committee on Consumer Safety (SCCS) at concentrations up to 5%.
Common questions
What is Ethylhexyl Triazone in beauty products?
Ethylhexyl Triazone is a synthetic sunscreen ingredient that absorbs UVB rays—the kind that cause sunburn and contribute to skin cancer. It's very stable in sunlight, meaning it doesn't break down quickly, so your protection lasts longer. It's also lightweight and doesn't leave a heavy white cast, making it popular in modern sunscreens.
What does Ethylhexyl Triazone do in a beauty product?
When applied to the skin, Ethylhexyl Triazone molecules absorb UVB photons and convert them into harmless heat energy, preventing the UV radiation from penetrating the skin and causing damage. Its high photostability ensures it remains effective for longer periods under sun exposure.
Is Ethylhexyl Triazone safe for most people?
Ethylhexyl Triazone is considered safe for use in sunscreens by major regulatory bodies outside the US. It has low skin penetration, low irritation potential, and is not classified as an endocrine disruptor based on current evidence.
Who should be careful with Ethylhexyl Triazone?
Those looking for a single-ingredient broad-spectrum sunscreen (must be paired with UVA filters)
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.