Ingredient review

Methylbenzylidene Camphor

INCI: METHYLENEDIOXYBENZOYL ETHYL PABA

A synthetic UVB filter that is effective but has limited global approval due to safety concerns.

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In plain English

This is a man-made ingredient added to sunscreens to help block UVB rays, the kind that cause sunburn. It works by absorbing the UV energy and turning it into heat, which is then released from the skin. While it's been used for decades, some countries have restricted it because of potential effects on hormones, so it's not as common in newer formulas.

Quick decision guide

Useful, but context matters

Methylbenzylidene Camphor 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Methylbenzylidene Camphor.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A synthetic organic compound that absorbs ultraviolet B (UVB) radiation. It belongs to the camphor family of UV filters.

How it works

When applied to the skin, it absorbs UVB light and converts it into harmless heat, preventing the radiation from penetrating deeper into the skin and causing damage.

Pros

Strong UVB protection

Effectively absorbs UVB rays, reducing the risk of sunburn and short-term skin damage.

Good photostability

Remains stable under sunlight, so it doesn't break down quickly and maintains protection longer.

Cons and cautions

Limited global approval

Not approved in the US or Japan, which can make finding products with this ingredient difficult depending on where you live.

Potential endocrine concerns

Some animal studies suggest it may mimic estrogen, raising questions about long-term safety, though human data is limited.

Best for

  • People looking for broad-spectrum UVB protection
  • Those using sunscreens approved in the EU or Australia

Use caution if

  • Those with sensitive or reactive skin
  • Pregnant or nursing individuals seeking extra caution

Usage tips

Apply sunscreen generously 15 minutes before sun exposure.
Reapply every two hours or after swimming or sweating.

Safety summary

Generally considered safe at approved concentrations, but ongoing research into endocrine effects means it's less favored in newer formulations. Regulatory status varies by country.

Research notes

Animal studies have shown potential endocrine activity, but human studies are limited and inconclusive. It remains approved in many regions as a safe UV filter.

Common label clues

Typical concentration
Up to 4% in some regions, varies by regulation
Regulatory status
Approved in the EU and Australia up to 4%, but not permitted in the US or Japan due to insufficient safety data.
Common uses
Sunscreens, Daily moisturizers with SPF
Environmental note
Some studies suggest this ingredient may accumulate in aquatic environments, though its impact is still being researched.

Good to know

  • This ingredient is more common in European and Australian sunscreens than in US or Japanese ones.
  • It is often combined with other UV filters for broader protection.

Common questions

What is Methylbenzylidene Camphor in beauty products?

This is a man-made ingredient added to sunscreens to help block UVB rays, the kind that cause sunburn. It works by absorbing the UV energy and turning it into heat, which is then released from the skin. While it's been used for decades, some countries have restricted it because of potential effects on hormones, so it's not as common in newer formulas.

What does Methylbenzylidene Camphor do in a beauty product?

When applied to the skin, it absorbs UVB light and converts it into harmless heat, preventing the radiation from penetrating deeper into the skin and causing damage.

Is Methylbenzylidene Camphor safe for most people?

Generally considered safe at approved concentrations, but ongoing research into endocrine effects means it's less favored in newer formulations. Regulatory status varies by country.

Who should be careful with Methylbenzylidene Camphor?

Those with sensitive or reactive skin Pregnant or nursing individuals seeking extra caution

Research sources

European Chemicals Agency (ECHA) - Methylbenzylidene CamphorOpenPubMed - Safety assessment of camphor derivativesOpen

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.