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

2 articles in Ingredients

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