Avobenzone - UVA Sunscreen Filter for Broad-Spectrum UV Protection

Avobenzone

• INCI Name: Butyl Methoxydibenzoylmethane
• Molecular Formula: C₂₀H₂₂O₃
• CAS Number: 70356-09-1
• Alternate Names:
  • Avobenzone
  • Parsol® 1789
  • BMDBM
  • Butyl Methoxydibenzoylmethane
  • UVA Filter
• Benefits & Uses (Short):
  • Provides broad-spectrum UVA protection
  • Helps prevent premature skin aging caused by sun exposure
  • Reduces risk of sun-induced skin damage
  • Essential ingredient in sunscreen and sun-care products
  • Used in sunscreens, moisturizers with SPF, BB creams, and cosmetic products with UV protection
• How It Works (Short):
  • Functions as a chemical UV filter that absorbs UVA radiation (320–400 nm) before it can penetrate and damage the skin
  • Converts absorbed UV energy into harmless heat, which is then released from the skin surface
  • Helps protect collagen and elastin from UV-induced degradation, reducing photoaging effects
  • Provides excellent UVA coverage, particularly in the UVA-I range (340–400 nm)
  • Often combined with UVB filters and photostabilizers such as octocrylene to improve overall sunscreen performance and stability
  • Plays a critical role in broad-spectrum sun protection formulations
• Olfactory Notes:
  • Practically odorless
  • Very faint aromatic note
  • Neutral scent profile in finished formulations
  • Minimal impact on fragrance systems

• FAQs:

  Q: What is Avobenzone used for?
  A: It is used as a UVA sunscreen filter to protect skin from sun damage and premature aging.

  Q: Does Avobenzone protect against UVB rays?
  A: No, it primarily protects against UVA rays and is usually combined with UVB filters for broad-spectrum protection.

  Q: Why is Avobenzone important in sunscreens?
  A: It provides one of the broadest UVA protection profiles available in cosmetic sunscreen formulations.

  Q: Is Avobenzone photostable?
  A: On its own, Avobenzone can degrade under sunlight, so it is often stabilized with ingredients like octocrylene.

  Q: What is the typical usage level?
  A: Usually 1%–5%, depending on regulatory limits and desired SPF/UVA protection.