Sun damage is the single biggest cause of premature skin aging, pigmentation, and skin cancer. Up to 80% of visible aging is caused by UV exposure, making sun protection the most impactful skincare habit you can develop. Here's how to protect your skin effectively.
Understanding UV Radiation
- UVB rays: Cause sunburns and play a key role in skin cancer development. Vary by season, time of day, and latitude.
- UVA rays: Penetrate deeper into the dermis, causing aging, pigmentation, and DNA damage. Present year-round at consistent intensity, even through glass and on cloudy days.
Choosing the Right Sunscreen
Look for these features in your sunscreen:
- Broad-spectrum: Protects against both UVA and UVB rays
- SPF 30–50+: SPF 30 blocks 97% of UVB; SPF 50 blocks 98%. Higher than SPF 50 provides negligible extra protection.
- PA+++ or PPD rating: Indicates UVA protection, crucial for preventing pigmentation on Indian skin
- Water-resistant: Important for outdoor activities and humid climates like Bangalore
How to Apply Sunscreen Correctly
- Apply sunscreen as the last step in your morning skincare routine, before makeup
- Use a generous amount, most people apply too little (about 2–3 finger lengths for the face)
- Apply 15–20 minutes before sun exposure
- Reapply every 2 hours when outdoors, or immediately after swimming or sweating
- Don't forget often-missed areas: ears, neck, back of hands, scalp parting
Bangalore-specific note: Bangalore's altitude means higher UV intensity than coastal cities. Many residents mistakenly believe cloudy weather means no UV exposure, UVA rays penetrate clouds and are present all day, every day.
Beyond Sunscreen: Additional Protection
- Wear UPF-rated clothing for extended outdoor activities
- Use a wide-brimmed hat and UV-blocking sunglasses
- Avoid peak UV hours (10am–4pm) when possible
- Seek shade, especially when outdoors during midday