UVA vs UVB: Understanding the Difference
UV radiation is responsible for an estimated 80% of visible facial ageing — including wrinkles, dark spots, loss of elasticity, and uneven texture. Understanding the two types of UV rays is essential for choosing the right protection strategy.
- UVB rays cause sunburn and directly damage DNA in skin cells
- UVA rays penetrate deeper, degrading collagen and elastin over time
- Both UVA and UVB are present year-round, even on cloudy days
- UVA rays penetrate through window glass — indoor protection matters too
Chemical vs Physical Sunscreen
Chemical sunscreens absorb UV radiation and convert it to heat. They tend to be lightweight and invisible on all skin tones. Physical (mineral) sunscreens reflect and scatter UV rays — ideal for sensitive and reactive skin types. Modern hybrid formulations offer the best of both approaches.
SPF in Practice
Most people apply only 25–50% of the required SPF amount, effectively halving their protection. Apply a full teaspoon to the face and neck, and reapply every two hours outdoors. Don't rely on SPF in makeup alone — a dedicated sunscreen applied beneath foundation provides the most reliable coverage.
If you could only use one skincare product for the rest of your life, it should be sunscreen. UV radiation causes 80% of visible facial ageing — and daily SPF is the single most powerful skin health investment available.
Making SPF a Daily Habit
The most effective way to integrate sun protection is to treat SPF as an irreplaceable morning step, not an optional extra. Choose a formula you enjoy wearing — texture, finish, and scent all matter — because you'll only use it consistently if you look forward to applying it.
- Apply SPF as the final morning skincare step, before makeup
- Use at least SPF 30 daily; SPF 50 for extended outdoor exposure
- Reapply every 90–120 minutes during prolonged sun exposure
- Look for broad-spectrum formulas protecting against both UVA and UVB
