UVA and UVB Filters
UVA and UVB filters are ingredients added to sunscreens, moisturisers and makeup to help shield skin from the sun’s ultraviolet rays. They come in mineral and chemical forms and are essential for daily protection against premature ageing and sun damage. In the UK, look for broad-spectrum formulas that cover both UVA and UVB.
How it works in skincare
In cosmetics and skincare, UVA and UVB filters work by either absorbing, reflecting or scattering ultraviolet radiation before it can penetrate the skin. Mineral filters such as titanium dioxide and zinc oxide sit on the skin’s surface and physically block rays, while chemical filters like octocrylene, avobenzone and ethylhexyl methoxycinnamate absorb UV energy and convert it into harmless heat. UK formulas must meet strict EU and UK regulatory standards for SPF and UVA protection, often shown by the UVA circle logo or PA rating.
Key benefits
- Helps prevent premature skin ageing
- Reduces the appearance of sun-induced pigmentation
- Supports daily photoprotection when used in moisturisers and makeup
- Helps maintain skin elasticity and firmness
- Protects against visible signs of sun damage
- Allows safer outdoor wear of light-coverage cosmetics
Best for
all skin types, sensitive skin, mature skin, pigmentation-prone skin, acne-prone skin
Where it comes from
UVA and UVB filters can be mineral-based, derived from naturally occurring ores such as titanium and zinc, or synthetic molecules created in laboratories. Many modern filters are designed to be photostable and ocean-friendly.