Fact-check Friday: What’s the deal with parabens in cosmetics?

Today’s Fact-check Friday focuses on one of the most unfairly demonised of chemicals in beauty products: parabens. You probably own at least one beauty product that proudly declares itself to be paraben-free – is there any reason to buy more, or is it pure marketing? What are parabens? Parabens are chemicals derived from a chemical called parahydroxybenzoic acid, with this …

Read more

Home teeth whitening – a basic guide

In the beauty world, hydrogen peroxide is the bleaching agent par excellence. It whitens hair, nails and teeth as well as having a host of household uses. I’ll expand more on the chemistry behind how it works in a later post, but it’s the practical use of hydrogen peroxide in teeth whitening that will be the focus of this post. …

Read more

How do deodorants work?

My first real cosmetic purchase was deodorant when I started high school, but not until recently did I really think about deodorant and how it works. So I did a little digging and here’s what I found: (not actually sweat) How is sweat produced and why does it smell? There are two types of glands which produce sweat: eccrine and …

Read more

What’s wrong with SLS?

(Photo credit: Steve Ford Elliott) Lots of personal care products proudly say they’re “SLS-free”. What was wrong with it in the first place? Sodium lauryl sulfate (also known as sodium dodecyl sulfate, or sodium coco-sulfate) is found in many personal care products, such as shampoo, toothpaste . It looks like this: It has an oil-soluble “tail” (on the left) and …

Read more

Does skin need to breathe?

In short, for humans who are not premature babies, the answer is “no“. Not in the traditional sense of taking in oxygen for the rest of your body, anyway. Your skin’s essential function is to prevent things from the environment from entering your body, and things you need (e.g. water) from leaving the body. It’s very good at its job! …

Read more

Sleeping beauty – benefits of getting enough shut-eye

  (You think you love your sleep? If you’re not Japanese – think again. The Japanese are HARDCORE SLEEPERS. Google images of “Japanese subway sleeping” for some pro-level public transport power-naps that most of us mere mortals can only aspire to.) I’ve been staying up til all hours recently for a number of reasons (Diablo, nail painting, thesis – in …

Read more

Is mineral oil dangerous? Part 2

Angela Mabray I’m looking at whether mineral oil, an incredibly common moisturiser – possibly the most common moisturiser, check your moisturiser’s ingredients – is dangerous again. Read part 1 here! 3. Mineral oil is comedogenic and will make you break out – FALSE Mineral oil appears on a large range of “comedogenic ingredients” lists. Once upon a time (well, in …

Read more

Is mineral oil dangerous? Part 1

Angela Mabray Mineral oil gets quite a bad rap… why? We’re going to take a look at the most common reasons people give for why you should avoid mineral oil this week in a 2-parter: 1. Mineral oil comes from crude oil… I’m not putting gasoline on my face! – FALSE Flcelloguy While it’s true that mineral oil comes from …

Read more