• A pharmacist with a Ph.D in skincare said that nutrition is the most important step in her routine. • Scientists have uncovered a link between the microbes in our gut and the health of our skin. • Sonal Chavda-Sitaram prioritizes eating high-fiber foods that support her gut health.

Sonal Chavda-Sitaram has spent years studying what we should put on our skin, but she believes a balanced diet that tends to her gut health is the most crucial step in her skincare routine.

"It's about laying the foundations right and thinking, 'What do I need as a foundation?', and then 'How do I support that with my topical needs?'" Chavda-Sitaram, a pharmacist with a Ph.D in topical skincare products like lotions and serums, told Business Insider.

In recent years, scientists have uncovered a link bet

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