Sunscreen: How to Choose It and Apply It Correctly
SPF is not the only number that matters. Broad-spectrum coverage, amount, reapplication and product format all change real-world protection.
Skincare · 7 min read · August 22, 2026
Look for three essentials
- Broad-spectrum UVA and UVB protection.
- SPF 30 or higher for routine use according to AAD guidance.
- Water resistance when swimming or sweating is expected.
The best sunscreen is the one you will actually use in a sufficient amount and use consistently.
Application matters as much as the SPF number
Apply sunscreen before sun exposure and cover all exposed areas. When outdoors, reapply about every two hours and after swimming or significant sweating according to the product instructions.
What about pigmentation and melasma?
Tinted sunscreen containing iron oxides can add protection from visible light, which may be useful for people prone to melasma or persistent dark spots.
Sunscreen is not the only layer of protection
Shade, protective clothing, a wide-brimmed hat and UV-protective eyewear complement sunscreen. Long direct sun exposure should not be managed with sunscreen alone.
Medical references
Medical review
This guide was written and medically reviewed by Dr. Yousef Abo Zarad, a German board-certified specialist in Dermatology and Venereology.