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Michelle Wong of Lab Muffin Beauty Science Scientist Reveals Sunscreen Sprays Shouldn’t Be Used

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Scientist reveals why sunscreen sprays are the WORST to buy: ‘One of these bottles can only cover your entire body three times’

  • Aerosol sunscreens contain between one third and 60 percent less sunscreen
  • The gases used can feel wet on your skin, so it’s hard to know if you’re protected
  • They only have two to three full-body uses per can, research shows

A scientist has revealed why you should never buy aerosol sunscreen — and even the TGA is taking another look at them.

Michelle Wong, a qualified cosmetic scientist and PhD student in organic medicinal chemistry, posted a video about her Lab Muffin Beauty Science Instagram explains the problem she has with the popular sprays.

She said each can of aerosol sunscreen contains only enough SPF for two or three full-body applications.

Michelle Wong, a scientist obsessed with beauty products, posted a video on her Lab Muffin Beauty Science Instagram explaining the problem

“This study found that a standard aerosol sunscreen contains about a third of propellant,” she said, citing a study from the University of Technology in Queensland.

“But it could be as much as 60 percent,” she added.

She explained that the propellants are pressurized gases that help push the sunscreen out of the can.

“SPF testing is done on the sunscreen without the propellant, so you’re actually ingesting about a third less product than stated,” she said.

“Some of the propellant also ends up on your skin as a liquid, so it’s hard to say how much sunscreen you actually applied.”

The aerosols usually use: butane, propane, isobutane and hydrocarbon – which are on the can label.

“The Australian TGA is currently evaluating aerosol sunscreens because of this study…stay tuned,” she wrote in the caption.

And her video struck a chord with many of her followers.

‘This is so wild! No wonder I’ve always thought these weren’t effective,” wrote one makeup artist.

Some revealed that they were burned after using the sunscreen, not knowing it was off.

Can confirm from personal experience. Which also meant explaining to a burn surgeon colleague why my back was bright red,” said one doctor.

She also explained the common gases used in the aerosol sunscreens

She also explained the common gases used in the aerosol sunscreens

“My poor man has literally just come home from a fun day out on the golf course… SUNBURN. When asked if he had applied sunscreen, he replied yes…and yes, it was spray. I just showed him this video, and it sold. No more spray cans for us. Just lotion…blobs of it,” one woman wrote.

Others were stunned by the results of the study.

‘I never thought of this before. I liked using them because they are faster but luckily they sold out at the propellant anthelios so I didn’t get it this year,” one woman wrote.

Michelle said that while they were handy, she couldn’t get around the volume issue.

‘They sure are handy! I think they’re okay if you spray a ton on them, but the 2/3 value is just disturbing to me.”

She added that pump sunscreen has its own problems, but is not affected by the aerosol problem.

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