I’ve been trying to figure out how the UV Index affects the SPF I should use in my daily moisturizer. From what I’ve read, higher UV Index means higher SPF is needed. Anyone else adjusting their SPF based on the daily UV Index?
Adjusting SPF based on the UV Index is a smart approach, especially since UV intensity varies throughout the year. For daily use, SPF 30 with broad-spectrum protection is a solid baseline, as it blocks 97% of UVB rays. However, on days with a high UV Index (think 6 or above), I’d recommend bumping up to SPF 50+ for added protection. One thing I’ve found helpful is checking the UV Index forecast in the morning—it takes seconds and ensures you’re prepared. Also, don’t forget to reapply every two hours if you’re outdoors; even high SPF loses effectiveness over time. Pairing SPF with a hat or sunglasses can provide extra defense on particularly intense days.