Benzophenone
What is Benzophenone?
Benzophenone is a synthetic diaryl ketone compound, chemically known as diphenylmethanone, derived from organic synthesis rather than natural sources. It belongs primarily to the sunscreen and fragrance categories in cosmetics, appearing in products like sunscreens, hair sprays, nail polishes, and perfumes. In formulations, it functions as a chemical UV filter by absorbing ultraviolet radiation in the UVB and short UVA ranges, then converting the energy into harmless heat to prevent penetration into the skin. Additionally, it serves as a fragrance fixative, helping scents last longer, and as a masking agent to neutralize off-odors from other ingredients. Its solubility in oils and alcohols makes it versatile for incorporation into various cosmetic bases, contributing to product stability and sensory appeal without leaving a visible residue.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Provides UV protection by absorbing harmful rays.
Enhances fragrance longevity and masks unwanted odors.
Non-comedogenic, suitable for acne-prone skin.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals frequently exposed to sunlight seeking added UV defense. | Those with known sensitivity to UV filters. |
| Users of scented products desiring stable aromas. | People experiencing photoallergic reactions. |
| People with oily or acne-prone skin due to low pore-clogging potential. | Individuals preferring mineral-based sun protection alternatives. |
Safety Notes
- Rated moderate concern by EWG for potential absorption and allergenicity.
- Approved for use in cosmetics within regulated limits by authorities like CIR.
Frequently Asked Questions about Benzophenone
What does benzophenone do in skincare?
It absorbs UV rays to protect skin and acts as a fragrance ingredient to improve scent stability and mask odors.
Is benzophenone safe for daily use?
It is considered safe in cosmetics at approved levels, though those with sensitivities should patch test.
Does benzophenone cause irritation?
It has low irritation potential for most, but photoallergy occurs rarely in sensitive individuals.