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Ask the Scientist

Science-backed answers to your biggest skincare questions. No hype. No trends. Just evidence explained simply.

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What Are Live Probiotics?

Published 9 August 2026 • Live Probiotics

The word has a formal definition, agreed by the scientists who study them. Most products using it on a skincare label do not meet it. Here is what it actually rules in and out.

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Why Ask the Scientist?

Most skincare advice online is driven by trends. This series is different.

  • Written by a microbial formulation scientist, not a copywriter.
  • Every claim traced back to published research, with sources you can check.
  • Complex topics explained in language anyone can follow.
  • Honest about what the evidence does and does not show.

Whether you're curious about the skin microbiome, probiotics, or ingredient science, you'll find straightforward answers backed by research, not marketing.

New Ask the Scientist articles published every Sunday.

Educational content only. This information is not intended to diagnose, treat, cure, or prevent any disease, and is not a substitute for advice from a qualified healthcare professional.