LÉ Blog

Salicylic vs Glycolic acid: Pros, Cons, How to Choose

When you first foray into the world of chemical exfoliation, two ingredients are bound to come up almost immediately: salicylic acid and glycolic acid. Salicylic acid is a BHA (beta hydroxy acid) often associated with acne, clearing skin congestion. On the other hand, glycolic acid is an AHA (alpha hydroxy acid) that’s associated with smoother, brighter skin texture. So how do you know which one is right for your skin? Is one better than the other? Should you use one more both in your routine...

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How do pimple patches work and what are the best ones?

Acne patches have emerged as a popular item to keep in your skincare arsenal. These handle little patches are positioned as a “break out in case of emergency” tool for quick, effective relief or your pimple. But how do they work really? In this blog, we’ll cover the science behind these nifty little patches, what to really expect from them, whether or not they can replace your topical acne treatments, and what are some of the best pimple patches on the market. How do pimple patches work? Pimp...

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Tretinoin vs. Retinol - Which one should you use?

Retinoids, molecules in the vitamin A family, are probably some of the most celebrated skincare actives out there. With a proven track record for addressing everything from acne to aging, retinoids are truly skincare’s glitziest superstars. Because of this stardom, the product landscape is filled with different retinoids to choose from, and it can be pretty confusing to choose just the right molecule for you. Let’s take a closer look at two of the most popular retinoids – tretinoin and retino...

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Should You Be Using PHA Gluconolactone Instead of Glycolic Acid?

There’s a (relatively) new chemical exfoliant in town – PHA (poly hydroxy acid) gluconolactone! It’s no secret that we love our AHAs (alpha hydroxy acid). These chemical exfoliants are tried and true ingredients, and we’re big proponents of them being used as staples in anyone’s routine to tackle anything from dry skin to wrinkles. That said, the gold standard AHA glycolic acid is not really made for everyone. For many people, glycolic acid may simply be too aggressive, leading to irritation,...

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The Chemists' Oily Skin Routine Guide

When you’re dealing with oily skin, it can end up feeling like a constant battle. Managing the shiny T-zone, worrying about breakouts, and feeling frustrated trying out new products is so common and can be a lot to deal with. However, understanding the biology behind oily skin and implementing a science-based, tailored skincare routine can help manage all your oily skin woes. So let’s delve into the root cause of oily skin, the essentials of your daily and weekly skincare routine goals, and w...

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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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Adapalene - Can You Use it for Anti-Aging?...like Tretinoin?

If your goal is effective skincare, you’ll probably be pretty familiar with the world of retinoids. This family of molecules has a long, rich history of clinical testing to showcase their efficacy in treating a wide range of skin concerns from acne to anti-aging. However, choosing the right retinoid for your skin can quickly become pretty confusing. Every retinoid can come with their own quirks, target percentages, and benefits. In this guide, we’ll take a closer look at the acne superstar, a...

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Tretinoin - Is it Bad for Skin Long Term?

Tretinoin is by far the most famous retinoid of the Vitamin A category and for good reason. It has a prevalent history of use plus a long long history of validation for multiple benefits including acne, anti-aging, and hyperpigmentation. However, much like any other popular skincare ingredient, with its fame comes a few areas of confusion. Tretinoin beginners may find themselves asking questions like, is using tretinoin long term actually bad for me?. Am I still purging? Or is this concentrat...

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Which 10% Azelaic Acid Product is Right For Me?

Azelaic acid is one of those hot ingredients with data showcasing its ability to help tackle major skin concerns such as hyperpigmentation, acne, and even rosacea. However, the challenge with this ingredient is that in order to achieve these benefits you’ll need a LOT of it in your skincare (read: major formula challenges for chemists). The other difficulty is that it’s also regulated so you typically would need a prescription to get those higher concentrations (15-20%) and won’t be able to p...

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Everything you need to know about silymarin in skincare

There’s an ingredient that's probbbaaabbbly not quite on your skincare radar yet - but we think it’s worth considering. The ingredient is called Silymarin (sih-lee-mae-rin), and comes from the extract of milk thistle. You'll find it on the ingredient list as "Silybum Marianum Fruit Extract", usually in a handful of clinical brands such as Skinceuticals, PCA Skin, and Dr. Dennis Gross…. And most recently our very own Mr. Reliable 2.0! Silymarin is a potent antioxidant with anti-inflammatory pr...

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The Chemists' Comprehensive Guide to Acne PT. 1

*For severe and cystic acne breakouts, we recommend finding an awesome dermatologist who is willing to help shape and build your acne routine from cleanser to treatment. Dermatologists are the only ones that will be able to prescribe more effective medication. Bring your products in to show your dermatologist so they can get a full understanding of your current regimen and what you’ve already tried. **As a nice supplement, checkout our oily skin guide to build out your skincare routine fundam...

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