Video: Why DIY Sunscreen Doesn’t Work

Video: Why DIY Sunscreen Doesn't Work

Video: Why DIY Sunscreen Doesn't Work

Here’s a new video on why DIY sunscreen doesn’t work. It’s a much more detailed version of my post on DIY sunscreen from a while ago. It’s a topic that’s quite important to me, since it’s one of those cases where having the wrong information can cause serious harm!

This video has been a bit delayed due to the rest of my life getting a bit hectic, but I managed to get it out before the Northern Hemisphere summer finished, so go me…

I bought a lapel microphone and some new editing software, so everything is a bit more polished I hope! Check it out here.

Extra notes and references

Since I know there are a lot of nerds out there who like references and extra information, here are some of the sources for specific things I mention in the video (I got lazy with my citation style, sorry):

Skin cancer stats are sourced from the Cancer Council Australia and the Skin Cancer Foundation, who list the original sources at the bottom of their respective sites.

SPF testing guidelines: FDA (USA), TGA (Australia), EC (EU).

Dangers of UVA: Blog Post: Why You Should Protect Yourself From UVA

More info on sunscreen formulation

Sunscreens are very unlikely to cause endocrine disruption in practice: Journal of the American Academy of Dermatology (open access – quote: “Mathematic modeling indicated that it would take 277 years using a sunscreen containing 6% oxybenzone used at 2 mg/cm2 (the dose recommended for sun-protection factor [SPF] testing by the FDA) or 1 mg/cm2 (reported real-life use) to achieve the systemic levels of oxybenzone achieved in the study in rats”), Australasian Journal of Dermatology (looks at other filters apart from oxybenzone)

Nanoparticles in sunscreens are safe: TGA Literature Review (very comprehensive)

More (open access!) papers on zinc oxide: Nanotechnology Science and Applications, Science and Technology of Advanced Materials

People stay in the sun for longer when wearing sunscreen: JID paper (open access)

Reporting illegal medicines: FDA report form, TGA report form

Do oils increase UV penetration?

This is a topic that I thought deserved a longer write-up.

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Video: Is My Skin Purging or Breaking Out?

Video: Is My Skin Purging or Breaking Out?

Video: Is My Skin Purging or Breaking Out?

Here’s my second video. It’s based on my Purging vs Breakouts post, which I got a lot of questions on – I’m hoping that this video makes things a bit clearer if you’re trying to work out if you’re purging or breaking out from a new product! In it I cover:

  • the science behind purging and breakouts
  • tips on working out if you’re purging or breaking out
  • some ways of making the purging process less severe

(Yes, right after I edited this photo and realised how bad my eye wrinkles were, I started using anti-aging peptides and sunscreen around my eyes religiously.)

Check out the video here.

Here’s a handy, Pinterest-friendly summary of the key points for differentiating between purging and regular breakouts. These rules aren’t hard and fast, and the lists of product types are really not exhaustive at all. There’s a fair bit of guesswork required to figure out what’s going on too. But hopefully it helps!

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