SkincareDaily SPF After 35: The Complete Anti-Ageing Guide
SPF is the most scientifically proven anti-ageing measure. Mineral, chemical, SPF30 vs 50 — everything you need to know to protect your skin.
SPF: the most underused anti-ager
Longitudinal studies confirm: people applying SPF daily have skin that is biologically 10 years younger. UV radiation is responsible for 80% of visible skin ageing (wrinkles, spots, loss of firmness).
UVA vs UVB: the essential distinction
UVB (burn, cause sunburn): blocked by glass and cloud cover. UVA (age the skin, penetrate the deep dermis, present all year): pass through glass and clouds. 95% of UV reaching Earth are UVA.
SPF 30 vs SPF 50: the real difference
SPF 30 blocks 97% of UVB. SPF 50 blocks 98%. After 35, when damage accumulates, that 1% matters. **Dermatologist recommendation**: SPF 50 minimum daily, summer and winter.
Mineral vs chemical
Mineral filters (zinc oxide, titanium dioxide): Low irritation, compatible with sensitive skin. Chemical filters (avobenzone, tinosorb): Light, invisible textures. Hybrid formulas (recommended): Combine both for the best of both worlds.
How to apply SPF correctly
Quantity matters: **¼ teaspoon** for the face alone. Most people only apply 20-50% of the effective amount. Reapply every **2 hours** in direct sun. For daily indoor use, one morning application is sufficient.
Best face SPFs 2025
EltaMD UV Clear SPF 46 (£44): Ultra-light, niacinamide included. La Roche-Posay Anthelios SPF50 (£20): The pharmacy gold standard. Altruist SPF50 (£4): Best value on the market. Ultrasun Face SPF50+ (£30): Fragrance-free, long-lasting.