We talk a lot about how to use your products, but this post is about how NOT to use your products. Here are some of the mistakes I see people making when using their products, and why you shouldn’t do that. Putting the dropper on your face I see this a lot on social media….
How to Protect Your Skin Against Blue Light: an Update (with video)
I’ve talked about visible light and blue light, and their effects on pigmentation in lots of detail before. There’s been more studies done since then – fortunately my conclusions are still correct! In short, the vast majority of us don’t have to worry about visible light or blue light coming from our screens. There just…
Do We Need to Worry About Heat From Sunscreens? (with video)
One of the big misconceptions about sunscreens is how they work, in particular chemical and physical sunscreens. All sunscreens work mostly by absorbing UV and converting it to heat. I’ve talked about this a whole bunch of times before, and I recently did a deep dive about the mechanisms behind how chemical and physical sunscreens…
How Do Sunscreens Work? The Science (with video)
I’ve had a lot of people ask me to explain the nitty gritty behind how sunscreen ingredients work. I warned everyone it would be super nerdy and really quite complicated, but a lot of people said it was fine… so here it is: the deep dive into how sunscreen ingredients work! A warning: this goes…
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