Quick answer
Daily broad-spectrum SPF 30+ is the single most effective anti-aging and skin-protection step. Apply generously every morning and reapply when outdoors.
Key takeaways
- Use broad-spectrum SPF 30 or higher daily.
- Most people apply too little — be generous.
- Reapply every 2 hours when outside.
Why it matters
Sun protection prevents damage, pigmentation and premature aging — it's the highest-impact skincare step.
How to choose and use
Broad-spectrum, SPF 30+, applied generously every morning, reapplied when outdoors.
Frequently asked questions
Do I need sunscreen indoors?
Daily use is a good habit; UV reaches you near windows and on cloudy days, though indoor exposure is lower.
What SPF should I use?
Broad-spectrum SPF 30 or higher for daily use.
Sources
- Sunscreen guidance — American Academy of Dermatology
