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LÉ Blog

Madecassoside - the real hero in Centella Asiatica "Cica" Skincare

Centella asiatica (a.k.a. All things “cica” in skinare) is a popular skincare ingredient that touts soothing benefits. You might be wondering what sets centella apart when it seems like every plant extract you hear about in skincare touts “soothing”, “anti-inflammatory (a big no-no since this is a drug claim but it’s out there)”, and “antioxidant” benefits. But hear it from the chemists! – very few of these ingredients actually have clinical evidence proving that they work in skincare. From t...

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Results Summary for our 2023 30-for-30 Sunscreen Challenge

In celebration of summer, we decided to test 30 different sunscreens over 30 days to see how these applied, how they held up over time, and even how they wash off. Please head to our TikTok and Instagram channel if you want to see the visuals. Otherwise here’s the running list of sunscreens we’ve tried, our rating, and why: *To help readers learn more about products showcased in this challenge, we built out and organized these results in Shop My Shelf. We do receive a small commission for usi...

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Which Vitamin C Derivative is the Best For My Skin?

We have talked about the science behind vitamin C skincare, we have even tested a bunch of CE Ferulic dupes - yet there’s still more for us to cover in the vitamin C serum landscape. Vitamin C is actually a whole family of related molecules that all behave slightly differently. The OG vitamin C with the glitzy skin benefits that you often hear of is L-ascorbic acid. But since ascorbic acid is notoriously unstable in the presence of light, water, and air, many have turned to derivative compoun...

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Your Cleansing Questions Answered: Any Scientific Takeaways Here?

In this blog post: How helpful are acne cleansers? Is there such thing as over-washing? Cleanser Formulation for Dry Skin Cleanser Impact on Rosacea Why Personal Cleanser Preference is Valid Chemists' Skin Type & Cleanser Preferences Takeaways References It would be nice if there was some scientific formula that could tell us what cleanser would best suit our skin. Most of us have spent a fair part of our adult (and young adult) lives jumping from one brand to another, hoping to find the magi...

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Mandelic Acid - Should You Choose It Over Salicylic Acid or Glycolic Acid?

AHAs (alpha hydroxy acids) such as glycolic and lactic acid have long enjoyed the spotlight - and for good reason! These are your proven chemical exfoliants essential to most anti-aging, hyperpigmentation skin routines. Beyond these two, there are plenty of “new age” AHAs that get touted for similar skin benefits, and one of the newer kids on the block we want to shine a spotlight on is mandelic acid. As chemists, we always have to look at the available clinical evidence on these newer ingred...

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