SPF 100 vs SPF 85 Sunscreen: What's the Real Difference?
By The Original Panama Jack®: Hats, Sunscreen, Sunglasses ... | Published: 2026-10-21
Category: Comparisons
Does SPF 100 offer significantly more protection than SPF 85? We compare both options, bust common myths, and help you choose the right high-SPF sunscreen for your needs.
Quick answer
SPF 100 blocks about 99% of UVB rays while SPF 85 blocks about 98% – the real-world difference is minimal. Both offer excellent protection when applied correctly. Your choice should depend on your activity and personal preference for texture and application.
The myth: higher SPF means proportionally more protection
Many people think SPF 100 is twice as protective as SPF 50, but that's not how SPF works. The difference between SPF 85 and SPF 100 is just about 1% in UVB blockage. Both are classified as 'high protection' and provide excellent defense against sunburn when used properly.
What matters more than the number is how you apply it. Most people apply far less than the recommended amount, which drastically reduces the actual SPF you get. A lower SPF used generously and reapplied often will outperform a higher SPF used sparingly.
When SPF 100 makes sense
If you're spending the entire day in direct, intense sun – think beach days, boating, or outdoor work – the extra margin of error from SPF 100 can be reassuring. It's also a good choice for very fair skin that burns easily. Our Continuous Spray Sunscreen SPF 100 offers maximum protection in a convenient, lightweight spray that's easy to reapply.
When SPF 85 is a smart choice
SPF 85 provides nearly identical protection to SPF 100 but often comes in a lotion format that some people prefer for more controlled application. Our Sunscreen Lotion SPF 85 is infused with moisturizing oils, making it a great option for active days like paddleboarding or hiking where you want protection without sacrificing skin comfort.
The verdicts on SPF 100 vs SPF 85
- Myth: SPF 100 protects twice as much as SPF 50: Not true. SPF 100 blocks ~99% of UVB, SPF 50 blocks ~98%, and SPF 85 blocks ~98% as well. The jump from 50 to 100 is only about 1% more coverage.
- Myth: Higher SPF means you can stay in the sun all day without reapplying: False. Both SPF 85 and SPF 100 are water resistant for 80 minutes. Reapply every 2 hours, or after swimming or sweating, regardless of the SPF number. Set a timer or use a reapplication reminder app to stay on schedule.
- Myth: Spray sunscreens don't work as well as lotions: Both forms work equally well when applied correctly. Spray sunscreens require you to rub in the product for even coverage and avoid inhaling it. Lotions give you more visible control. Choose the format you'll actually use consistently – that's the most effective sunscreen.
Product facts
- Continuous Spray Sunscreen SPF 100: SPF 100 broad spectrum UVA/UVB protection, water resistant for 80 minutes, moisturizing antioxidant-rich formula, free from oxybenzone, octinoxate, and PABA. The spray format makes reapplication quick and easy, which is critical for maintaining protection during long days outdoors.
Continuous Spray Sunscreen SPF 100 - Sunscreen Lotion SPF 85: SPF 85 broad spectrum UVA/UVB protection, water resistant for 80 minutes, infused with moisturizing oils for a comfortable feel. The lotion format gives you more control over application and provides extra moisture, ideal for dry or sensitive skin during active use.
Sunscreen Lotion SPF 85
