Cloudy days, indoors, in the car: four UV myths, corrected

"It's cloudy, so I'm fine." "I'm inside all day, so why sunscreen?" Sound familiar? Here are the myths that come up most.

Myth 1: No UV on cloudy days

• Clouds only cut UV partly. The general explanation is that a good share still gets through
• Checking your local UV index is a helpful habit

Myth 2: Windows block everything

• Ordinary glass blocks most UVB but is known to let much of the UVA through
• There's a reason people with window desks or long drives say one side of the face looks duller

Myth 3: Darker skin doesn't need sunscreen

• You may burn less, but pigmentation and photoaging happen across all skin tones

Myth 4: One layer of high SPF lasts all day

• The SPF number describes how much it blocks, not how long. Sweat and rubbing wear it off, so reapply

A realistic compromise If you're mostly indoors, many people go with one morning layer plus top-ups near windows or when heading out.

What's the strangest UV myth you've heard?

#UV #Sunscreen #UVIndex #SkincareBasics