Barrier Edit

How skin holds on to moisture, what the research on each ingredient shows, and where it stops.

A fingertip pressing into a clear, glossy gel cube on a small white plate against a terracotta background
Ingredients

Hyaluronic Acid Supplements: Do They Work for Your Skin?

Hyaluronic acid keeps your skin plump and hydrated. Here's how a molecule you swallow reaches your skin, and what the trials found.

7 min read
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The back of a hand with a medium-brown skin tone resting on a pale terrazzo table in striped balcony shade, with a thin layer of cream half absorbed into the skin
Ingredients

Ceramides for Skin: What They Do and Why They Matter

Ceramides are the fats that hold your skin's outer layer together. Here's what they do, why levels dip, and what creams and capsules can do about it.

8 min read
A woman sitting on the edge of a bed at dusk, smoothing lotion onto her shin, with a warm lamp and a blue evening window behind her
Hydration

Why Is My Skin So Dry? The Real Causes, From Your Shower to Your Hormones

Dry skin is rarely down to one thing. Here's what research links to it, from the air in your home to your age, your hormones and your medicine cabinet, and when it's...

8 min read
A natural sea sponge in a shallow glass dish with a pale ceramic lid resting half over it, on dark slate in a soft beam of light
Hydration

Dry or Dehydrated Skin? How Skin Holds On to Water

6 min read
Thin sheets of handmade rice paper layered like brickwork on linen, with soft balm in the gaps
Skin barrier

The Skin Barrier, Explained

5 min read

5 articles in Hydration

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