What Are Propylene and Butylene Glycol, and Are They Safe?

What are propylene and butylene glycol, and are they safe?

One of the common reader requests I get is for “toxic” ingredient breakdowns, so today I’m looking at two ingredients that are commonly on “avoid” lists: propylene and butylene glycol. What are propylene and butylene glycol? Glycols in chemistry are ingredients that contain two OH (alcohol) groups. Propylene glycol contains 3 carbon atoms, while butylene glycol is a little larger …

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Product Rant: SPF Sunscreen Drops

Product Rant: SPF Sunscreen Drops

Here’s a pet peeve of mine: SPF drops and boosters. Fellow skincare fanatic Hannah (@ms_hannah_e on Instagram) reminded me about them recently, right when I was in a ranty mood, so it fit right in. What Are SPF Sunscreen Drops? SPF Sunscreen Drops are products that you’re supposed to mix into other products to “turn them into sunscreens”. Some examples …

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Skin Deva Review: Affordable Targeted Serums

Skin Deva Serum Review

If you’re after a new brand of targeted serums at reasonable prices, without controversial marketing, Skin Deva might be up your alley! This brand (which has free shipping in the US, although they ship worldwide as well) has a range of simple serums containing 1 or 2 evidence-backed ingredients only. I personally prefer to use these sorts of targeted serums in …

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How to Use Instagram as a Skin Diary

How to Use Instagram as a Skin Diary

As I discuss in my upcoming eBook, The Lab Muffin Guide to Basic Skincare, it’s important to keep a record of your skincare routine and skin condition. It’s a fantastic way to help you figure out what’s actually working for your skin, and track the products and ingredients that your skin reacts to. One really useful tool that you can …

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Chemical vs Physical Sunscreens: The Science

Video: Chemical vs Physical Sunscreens: The Science

Are chemical or physical sunscreens better? I touched on this in my Sunscreen and Make-up video, but a lot of people have been asking me to talk more about it, so I’ve expanded on the topic in this post, which comes in video form as well! Click here for the video – scroll down for the blog post “summary” version …

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Lip Balm Review: Nuxe, Bite, Laneige, Chapstick, Burt’s Bees…

Lip Balm Review: Nuxe, Bite, Laneige, Chapstick, Burt's Bees...

I have large lips so they tend to dry out quickly, so effective lip balms are one of my obsessions. I’ve been trying out some products to try to keep my lips moisturised overnight – here’s a review of: No Frills Budget Options Chapstick Cake Batter Chapstick Dual Action Hydration Lock Nivea Pure and Natural Lip Care with Chamomile and …

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How Much Sunscreen Do You Need For Your Face?

Video: How Much Sunscreen Do You Need For Your Face?

You’ve probably heard that you need 1/4 teaspoon of sunscreen to cover your face. This quantity is calculated from an estimate of people’s face sizes, and the amount of sunscreen they use in SPF testing (2 mg per cm2). Since it’s based on the thickness of sunscreen, a larger face will need more sunscreen, while a smaller face will need …

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My Emergency Routine for Treating an Irritant Breakout

My Emergency Routine for Treating an Irritant Breakout

A couple of weeks ago I had an irritant breakout reaction from testing a product, and I posted about it on Instagram. I’m still not 100% sure which product it was, but I used an anti-breakout routine that flattened my pimples in about 24 hours, and they were almost completely gone in around 3 days. I had a lot of …

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