The Science of Hair Products: Shampoo and Conditioner

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! Note: This post is based on a video sponsored by The Ordinary, but this …

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The Science of Laser Skin Treatments and Picosure Review

laser picosure treatment

This video was sponsored by Cynosure, although this post was not. Lasers! You can use them to cut things, you can use them to point at words, and you can use them to treat about a million different skin-related things. These are just the ones I found on the AAD website: Birthmarks, melasma, hyperpigmentation, freckles, acne, rosacea, psoriasis, wrinkles, fine …

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Nail Polish, Miscarriages, Cancer? Not So Pretty Episode 2

Not So Pretty 2 cover

Not So Pretty is a HBO documentary series about supposedly dangerous beauty products. It’s a very persuasive, slick-looking documentary. A lot of people chucked out their products after watching it, and as someone who breaks open bottles to use the last three drops at the bottom, this cut me deep. As a scientist who uses a lot of beauty products …

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Talc and Asbestos in Makeup: Not So Pretty Episode 1

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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Answering (Almost) Every Sunscreen Question

sunscreen questions guide

I’ve talked a ton about sunscreen over the years, but I’ve found that on every sunscreen post I get asked questions that I’ve answered before, and I think it’s because I’ve gotten a lot of new followers (hi, welcome and thank you!). So I thought I’d do a post where I try to cover every sunscreen question that’s relevant to …

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Free Sunscreen Science E-Summit!

Sunscreen E-Summit

Here’s a special event for all the sunscreen nerds! I’ve teamed up with Jen of The Eco Well to organise the Sunscreen E-Summit, which is happening 15 May! This is a FREE event featuring some incredible speakers that you’d normally have to pay expensive conference fees to learn from, including academic researchers, ingredient supplier representatives, sunscreen formulators and regulatory experts. …

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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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