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What Is the Skin Barrier and Why Does It Matter
A plain-language look at the skin barrier: what the outermost layer of skin is made of, what it protects against, and everyday habits that support it.
Skin Basics
Skin Barrier Care
How the barrier works and how to look after it.
Ceramides in Skincare Explained
Ceramides are natural lipids in the outer skin layer. Learn what they do, why moisturizers include them, and what to realistically expect from them.
Fragrance and Skin Sensitivity
Why added scents bother some skin, what fragrance-free and unscented labels actually mean, and how to cut down on fragrance if your skin is reactive.
Glycerin: A Common Moisturizing Ingredient
Glycerin shows up in a huge range of moisturizers and cleansers. Learn what this humectant is, how it works, and what to know about using it.
How to Patch Test a New Product
A simple, step-by-step way to patch test a new skincare product on a small area first, what to watch for, and the limits of what a patch test can tell you.
Humectants, Emollients and Occlusives
Moisturizer ingredients tend to fall into three groups by how they work. Learn how humectants, emollients and occlusives differ and how they combine.
Recovering From Over-Exfoliation
Too much exfoliating can leave skin raw, tight and stinging. Learn how to recognize it, pull back, simplify your routine, and give skin time to settle.
Signs of a Damaged Skin Barrier
Stinging, tightness, flaking and sudden sensitivity are common signs of a stressed skin barrier. Learn what to look for, what else it could be, and what helps.
Skin Purging Versus Irritation
Purging is the idea that skin breaks out before improving after a new active. Learn why it is hard to tell from irritation and how to judge your own skin.
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