Avobenzone
Butyl Methoxydibenzoylmethane
Also known as: Parsol 1789 · Butyl Methoxydibenzoylmethane
UV filterSunscreen
“The most common UVA filter — essential for full-spectrum sun protection.”
What it does
Avobenzone is an oil-soluble chemical UV filter that absorbs the full spectrum of UVA radiation (320–400nm). It is the only FDA-approved chemical filter that covers the full UVA range and is found in the vast majority of chemical sunscreens. It is inherently unstable and must be paired with stabilisers like octocrylene or Tinosorb.
Benefits
- Broad UVA coverage — the widest of any chemical filter
- FDA-approved and widely available
- Effective at low concentrations
How to layer
☀️ Morning routine
Cleanser
Toner
Serum
Moisturiser
SPF
🌙 Evening routine
Cleanser
Toner
Serum
Moisturiser
Face Oil
After cleansing, before moisturiser
Good for
All skin
Works well with
Heads up
- ⚠Photounstable — degrades in UV light without a stabiliser
- ⚠Some studies suggest low-level skin penetration
- ⚠Can cause contact allergy in rare cases
How to use
Apply sunscreen generously (1/4 teaspoon for the face) 15–20 minutes before sun exposure. Reapply every 2 hours.
Typical concentration: 1–3% in sunscreen formulations (EU/UK limit)