What Is Benzophenone-3 and Why Is It Essential in UV Protection?

Introduction

Benzophenone-3, also known as Oxybenzone, is an organic compound widely used as a UV filter in sunscreens and cosmetic formulations. It effectively absorbs UVB and short-wave UVA radiation, helping to prevent sunburn, photoaging, and DNA damage caused by ultraviolet exposure. Its broad-spectrum protection makes it a common ingredient in skincare, cosmetics, and even plastic coatings.

Product Information

• Name: Benzophenone-3 (Oxybenzone)

• Chemical Formula: C14H12O3

• CAS Number: 131-57-7

• Appearance: Pale yellow crystalline powder

• Solubility: Soluble in organic solvents; slightly soluble in water

Key Features

• ☀️ Broad-spectrum UV protection (UVB and short-wave UVA)

• Stabilizes and enhances SPF performance in sunscreens

• Prevents photoaging and UV-induced skin damage

• Also used to protect polymers and cosmetics from UV degradation

• Compatible with both skincare and cosmetic formulations

Applications

Benzophenone-3 works by absorbing harmful UV rays and converting them into heat, which is harmlessly dissipated. This mechanism prevents UV penetration into the skin, reducing DNA damage, sunburn, and premature aging caused by oxidative stress.

Advantages

• Provides effective broad-spectrum UV defense

• Helps stabilize sunscreen formulations and enhance SPF

• Protects skin and cosmetic products from photo-degradation

• Widely tested and approved for regulated use in many regions

Limitations

• May cause skin sensitivity or allergic reactions in some individuals

• Regulatory restrictions on concentration in certain countries

• Environmental concerns regarding its impact on marine ecosystems

FAQs

Q: Is Benzophenone-3 safe for daily use?
A: Yes, when used within regulated concentrations (typically ≤6%), it is safe for topical use in sunscreens and cosmetics.

Q: Does it protect against both UVA and UVB rays?
A: It primarily protects against UVB and short-wave UVA, but is usually combined with other filters for full UVA coverage.

Q: Is it reef-safe?
A: Due to environmental concerns, some regions restrict its use in marine areas, and "reef-safe" alternatives are often preferred.

Conclusion

Benzophenone-3 is an essential UV filter that enhances sunscreen efficacy and protects skin against harmful radiation. While effective in sun protection, it is best used within regulated limits and combined with other UV filters for comprehensive coverage.