The gut-skin link: A new approach to treating rosacea

Approved by: Consultant Dermatologist, Dr Sreedhar Krishna
Created: 18.02.2026
The gut-skin link: A new approach to treating rosacea
Rosacea treatment is no longer about simply calming the skin's surface through topical treatments and light therapy. Instead, dermatologists are now focusing their attention on fixing the gut-skin axis which highlights an imbalance in the digestive system’s microbiome.
Sufferers of rosacea often find that their skin flares up in the form of redness, stinging and bumps after eating certain foods or during periods of high stress, demonstrating a clear link between what is happening in their gut and more visibly, on their face. The gut lining is designed to let nutrients in but keep bad bacteria and toxins out. When it is unhealthy however, it becomes less fortified which allows the bacteria and toxins to leak into the bloodstream, triggering the immune system into immediate action. It sends out chemicals to clear out the waste which in turn make the blood vessels in the face dilate and turn red.
Instead of just trying to cover up the redness or shrink the blood vessels temporarily, this new approach uses postbiotics and specific nutritional protocols to calm the inflammation at its source in the gut, treating the stinging and burning sensations that are often the most uncomfortable part of the condition.
By focusing on internal health, the skin’s reactivity is naturally lowered, providing a factual, evidence-based way to manage this condition. By restoring balance to the gut, the skin is allowed to return to its natural, calm state, proving that true dermatological health is often an "inside-out" process.

Dr Sreedhar Krishna is a UK-based Consultant Dermatologist with a specialist clinical focus on acne, including the safe prescribing and monitoring of isotretinoin and other systemic acne treatments. He is the Chief Medical Officer and co-founder of skindoc, a consultant-led dermatology service providing both in-person and online care. His work centres on evidence-based acne management, patient safety, and maintaining high clinical standards in UK digital dermatology.