Sunscreen is your skin’s best defence against premature ageing and skin cancer. Yet myths and confusion remain. Here’s the latest dermatologist-approved advice for 2025.
SPF – What Does It Really Mean?
- SPF 30 blocks 97% of UVB rays.
- SPF 50 blocks 98% – the difference sounds small but is significant over years of sun exposure.
Broad-Spectrum Protection is Essential
Look for sunscreens labelled UVA + UVB. UVA rays penetrate glass and cause ageing; UVB rays cause burning. Both can cause skin cancer.
Mineral vs Chemical Sunscreens
- Mineral sunscreens (zinc oxide, titanium dioxide) sit on the skin and reflect rays.
- Chemical sunscreens absorb UV and break it down.
- Both are safe and effective; choice comes down to preference.
Trends in 2025
- Hybrid sunscreens combining mineral + chemical for better coverage.
- Tinted sunscreens protecting against visible light and helping prevent pigmentation.
- Environmentally friendly formulas safe for coral reefs.
How Much and How Often?
- Adults need about two tablespoons to cover the body.
- Reapply every 2 hours and immediately after swimming or sweating.
Sunscreen and Skin Cancer Prevention
Regular sunscreen use reduces the risk of basal cell carcinoma, squamous cell carcinoma, and melanoma. It also helps prevent wrinkles and pigmentation.
Key Takeaway
Daily sunscreen is non-negotiable. Choosing the right product and applying it properly could save your skin — and your life.
