The beauty industry has spent decades arguing about natural versus synthetic ingredients. Most of that argument, Lorraine Dallmeier has long suspected, is about marketing rather than science. A carbon atom doesn't remember where it came from.

But in this episode of Green Beauty Conversations, something shifts. Following her recent interview with Vikram Pandit of Phycus Biotechnologies, Lorraine asks whether published irritation data on fermentation-derived glycolic acid might finally give the natural versus synthetic debate a scientific footing it has never had before.

If you listened to episode 325 and want to know what Lorraine actually made of it, start here.

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