Expert explains effectiveness of sunscreen

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ST. LOUIS, MO (KTVI)- We're seeing some cloudy days and some really sunny days lately. You need your sunscreen for both kinds of days but what's really working and what's not?

Dermatologist Dr. Madhavi Kandula clears it up for us.

Top performing: 

1. La Roche-Posay Anthellos 60 Melt-In Sunscreen Milk lotion
2. Pure Sun Defense SPF 50 lotion
3. Banana Boat SunComfort Continuous Spray SPF 50+
4. Aveeno Protect + Hydrate SPF 30
5. No-Ad Sport SPF 50 lotion
6. Equate Sport Continuous Spray SPF 50