Ingredient review

Cyclohexylidenediphenylmethane

INCI: CYCLOHEXYLIDENEDIPHENYLMETHANE

A synthetic UV filter that helps protect skin from sun damage, but its use is limited to certain regions due to regulatory differences.

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In plain English

Cyclohexylidenediphenylmethane is a man-made ingredient added to sunscreens and other products to help block the sun's UV rays. It works by absorbing UV light and turning it into a small amount of heat, which is then released from the skin. This ingredient is not as widely used as some other UV filters, and its approval varies by country.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 5

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
How reviews are scored

Quick decision guide

Useful, but context matters

Cyclohexylidenediphenylmethane 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 Cyclohexylidenediphenylmethane.
  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 functions as a UV filter, specifically absorbing UVB and some UVA radiation.

How it works

It absorbs ultraviolet light energy and converts it into harmless heat, preventing the energy from penetrating the skin and causing damage like sunburn or premature aging.

Pros

Effective UV protection

Absorbs UVB and some UVA rays, helping to prevent sunburn and reduce the risk of skin cancer and premature aging.

Stable in formulations

It is relatively photostable, meaning it doesn't break down quickly in sunlight, so it maintains its protective effect longer.

Cons and cautions

Limited global approval

This ingredient is not approved by the FDA for use in sunscreens in the United States, so it is mainly found in products sold in other regions like Europe and Asia.

Potential for irritation

While rare, some people with very sensitive skin may experience mild irritation or allergic reactions, as with many synthetic UV filters.

Best for

  • People looking for effective sun protection
  • Those who prefer synthetic UV filters over mineral ones

Use caution if

  • Individuals with known sensitivity to organic UV filters
  • Those seeking a sunscreen approved in the US (check local regulations)

Usage tips

Apply sunscreen generously 15 minutes before sun exposure for best protection.
Reapply every two hours, or after swimming or sweating, to maintain effectiveness.

Safety summary

Generally considered safe for use in cosmetics at approved concentrations, with a low risk of irritation. However, it is not approved in all markets, so users should check local regulations.

Research notes

Research supports its effectiveness as a UV filter, but long-term safety data is less extensive compared to more common filters. Regulatory bodies in the EU have approved its use based on available safety studies.

Common label clues

Typical concentration
Up to 10% in leave-on products
Regulatory status
Approved as a UV filter in the European Union and other regions, but not currently approved by the FDA in the United States.
Common uses
Sunscreens, Daily moisturizers with SPF, Makeup with sun protection
Environmental note
Some synthetic UV filters have raised concerns about environmental impact, but specific data on this ingredient is limited.

Good to know

  • This ingredient is often combined with other UV filters to provide broad-spectrum protection.
  • Check product labels if you are traveling, as sunscreen regulations vary by country.

Common questions

What is Cyclohexylidenediphenylmethane in beauty products?

Cyclohexylidenediphenylmethane is a man-made ingredient added to sunscreens and other products to help block the sun's UV rays. It works by absorbing UV light and turning it into a small amount of heat, which is then released from the skin. This ingredient is not as widely used as some other UV filters, and its approval varies by country.

What does Cyclohexylidenediphenylmethane do in a beauty product?

It absorbs ultraviolet light energy and converts it into harmless heat, preventing the energy from penetrating the skin and causing damage like sunburn or premature aging.

Is Cyclohexylidenediphenylmethane safe for most people?

Generally considered safe for use in cosmetics at approved concentrations, with a low risk of irritation. However, it is not approved in all markets, so users should check local regulations.

Who should be careful with Cyclohexylidenediphenylmethane?

Individuals with known sensitivity to organic UV filters Those seeking a sunscreen approved in the US (check local regulations)

Research sources

European Chemicals Agency (ECHA) - CyclohexylidenediphenylmethaneOpenPubChem - CyclohexylidenediphenylmethaneOpen

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.