Ingredient review
Isopropyl Dibenzoylmethane
INCI: Isopropyl Dibenzoylmethane
A synthetic UVA filter that helps protect skin from sun damage, but its use has declined due to availability of more photostable alternatives.
In plain English
Isopropyl Dibenzoylmethane is a man-made ingredient that absorbs UVA rays from the sun, helping to prevent them from reaching deeper layers of your skin. It was once common in sunscreens but is now less popular because newer filters are more stable under sunlight and less likely to break down quickly.
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
Isopropyl Dibenzoylmethane 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 Isopropyl Dibenzoylmethane.
- 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 dibenzoylmethane family, designed to absorb ultraviolet A (UVA) radiation. It is a pale yellow crystalline powder that is oil-soluble.
How it works
When applied to the skin, it absorbs UVA light energy and converts it into harmless heat, preventing the radiation from penetrating the skin and causing damage like premature aging and DNA harm.
Pros
Effective UVA blocker
Absorbs UVA rays that contribute to skin aging and pigmentation, offering a layer of protection when included in a sunscreen.
Oil-soluble
Dissolves easily in oils, making it simple to formulate into creams and lotions without clumping or separating.
Cons and cautions
Lower photostability
Breaks down relatively quickly when exposed to sunlight, which can reduce its protective power over time unless stabilized by other ingredients.
Less common today
Many modern sunscreens now use more stable and effective UVA filters, so finding this ingredient in new products is rare.
Best for
- People looking for UVA protection in older sunscreen formulations
- Those who tolerate synthetic UV filters well
Use caution if
- Individuals with very sensitive or reactive skin
- Those seeking the most photostable, modern sun protection
Usage tips
Safety summary
Generally recognized as safe for topical use at low concentrations, but its lower photostability means it may not provide consistent protection unless properly formulated. No major safety alerts are associated with it.
Research notes
Studies show it is an effective UVA absorber, but its photodegradation limits its practical use. Research has focused on stabilizing it with other ingredients, though modern alternatives are now preferred.
Common label clues
- Typical concentration
- 0.5% to 3%
- Regulatory status
- Approved for use in sunscreens in some regions, but its use has declined globally due to stability concerns and the availability of better alternatives.
- Common uses
- Sunscreens, Broad-spectrum SPF products, Anti-aging formulations
- Environmental note
- Synthetic UV filters can accumulate in waterways; however, isopropyl dibenzoylmethane is less commonly used now, reducing its environmental footprint compared to more popular filters.
Good to know
- Often used alongside UVB filters like octinoxate to provide broad-spectrum coverage
- Not as photostable as avobenzone when formulated without stabilizers
Common questions
What is Isopropyl Dibenzoylmethane in beauty products?
Isopropyl Dibenzoylmethane is a man-made ingredient that absorbs UVA rays from the sun, helping to prevent them from reaching deeper layers of your skin. It was once common in sunscreens but is now less popular because newer filters are more stable under sunlight and less likely to break down quickly.
What does Isopropyl Dibenzoylmethane do in a beauty product?
When applied to the skin, it absorbs UVA light energy and converts it into harmless heat, preventing the radiation from penetrating the skin and causing damage like premature aging and DNA harm.
Is Isopropyl Dibenzoylmethane safe for most people?
Generally recognized as safe for topical use at low concentrations, but its lower photostability means it may not provide consistent protection unless properly formulated. No major safety alerts are associated with it.
Who should be careful with Isopropyl Dibenzoylmethane?
Individuals with very sensitive or reactive skin Those seeking the most photostable, modern sun protection
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.