“100% mineral sunscreens” using unregulated chemical filters (with videos)

other active SPF boosters 4

There’s a sort of industry secret with mineral sunscreens: a lot of them contain unregulated chemical sunscreens. Which isn’t always a big problem… but it also kind of is. Today we’re talking about inactive ingredients in sunscreens that aren’t really inactive. The video is here, keep scrolling for the text version…. SPF boosters It’s not that easy to make a sunscreen. It …

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The Science of Hair Products: Shampoo and Conditioner (with video)

This post is based on a sponsored video. Sulfates, fatty alcohols, silicones, preservatives… what are they doing in your shampoo and conditioner, and do you need to avoid them? Today’s post is a deep dive into some of the key ingredients in haircare products. The video version is here if you prefer that format! Science of Shampoo Let’s start with …

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Talc and Asbestos in Makeup: Not So Pretty Episode 1 (with video)

Not So Pretty

HBO has a new 4 part documentary Not So Pretty which talks about supposedly dangerous beauty products. This kind of documentary comes out every 6 months or so, and everyone panics and throws out their products. Like pretty much everyone I think, I’m concerned about my health, but not so into people trying to exploit this concern for attention, or …

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1,4-Dioxane Ban for Beauty Products? (With video)

Dioxane video

If you’ve ever looked up sodium laureth sulfate (SLES) and sodium lauryl sulfate (SLS) in a clean beauty app, like me, you might be surprised to find that SLES is dirtier than SLS. These apps are terrible and based on pseudoscience: SLS and SLES are both safe in your products. But if you’re a skincare nerd, you’ll know that SLS …

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Vitamin C Esters: Are ATIP and THDA the Same Thing?

THDA ATIP structures

Vitamin C is an amazing skincare active, but ascorbic acid can be annoying in products. That’s why vitamin C derivatives were developed – these are slightly altered versions of ascorbic acid that can get around these issues (irritation, instability, stained fingers, fake tan smell). Two of the INCI names for derivatives that you might’ve seen on ingredient lists are ascorbyl …

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Food, Diet and Acne: The Science (with video)

diet acne infographics

You’ve probably seen hundreds of these sorts of videos and infographics giving you lists of foods to stop eating to cure your acne. Is there any truth to this? Are all these foods actually giving us acne? Here’s a deep dive into the science behind food and acne. A quick warning: I’ve had a lot of requests for this topic, …

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Ultimate Vitamin C Skincare Guide Part 1: Ascorbic Acid (with video)

Vitamin C product guide

Vitamin C is one of the most commonly raved about ingredients in skincare, with lots of evidence to back up its effects. But it’s also one of the most confusing. There are just so many different vitamin C ingredients and product types, and this is before you even get to all the different products you can buy! So this is …

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