Hair porosity tests are a lie

float test

There’s a lot of haircare advice based around the idea of “hair porosity”. This is a pretty complex term that can mean a lot of different things in different contexts (this might become a longer deep dive one day!). A lot of the advice does lead people to products that suit their hair better, but this is mostly just coincidence …

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Does water damage hair? The myth of “hygral fatigue”

the myth of hygral fatigue

How water interacts with hair is one of the biggest sources of myths about hair. One of the biggest myths is the idea that wetting and drying hair over and over again inherently damages hair – common referred to as “hygral fatigue”. This isn’t true! Let’s dig deeper into this… This article is adapted from my video on hair hydration. …

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Hair, hydration and water: the real science

hair bonds break with water

Should you hydrate your hair? From all of the hydrating hair products out there, you’d think the answer is obviously, yes. But quite a lot of hair experts (including scientists) say that water is bad for hair, and causes damage. Neither of these are entirely true! Water is one of the most confusing topics in hair science. It’s a huge …

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“Plastic-free” is the new clean beauty: a treatise

anti plastic clean beauty meme

I recently came across a Threads post from @idea.soup that said: “I don’t have any evidence for it but I have a weird feeling the anti-polyester movement is about to become a right-wing pipeline” This was a lightbulb moment for me!  I started doing scicomm in 2011 because I realised the “non-toxic” clean beauty movement could be a pipeline to …

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What is hyaluronic acid and how does it work in skincare and makeup?

What is hyaluronic acid and how does it work?

What Is Hyaluronic Acid? Hyaluronic acid (HA), along with its cousin sodium hyaluronate, is an immensely popular ingredient in skincare and makeup. It’s also naturally found in the body. Most of it dwells in the extracellular matrix, the scaffold which holds up the cells of your skin. Hyaluronic acid is found in both the epidermis and the deeper dermis, where …

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Investigating the viral heat protectant test

Hair protectant receipts thumbnail

There’s been a lot of people testing heat protectants on receipts lately. You spray a heat protectant on a thermal paper receipt, then use a flat iron hair straightener on it. Since receipt paper turns black with heat, the receipts that stay white have the more effective heat protectants… … Or so the logic goes, anyway. But does this test …

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How to REALLY fix your itchy scalp: The Science

itchy scalp thumbnail

Your scalp’s itchy and inflamed – and none of the products you’ve tried seem to be working. And now, maybe your hair’s even thinning. Here’s the problem: Most scalp products aren’t treating the right cause, and no one’s really explaining what that is. And a lot of scalp products actually make things worse. I’m the owner of a problematic scalp, …

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How to get sick less

co2 monitors

I’ve become a bit of an airborne transmission nerd during the pandemic. Every once in a while I’ll share some of the tools I use on social media, and I’ve realised quite a lot of other people are also interested in how to not get sick, or at least get sick less, outside of getting vaccinated. So here’s a quick …

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