Tweet Herbal remedies could be the most naturally effective way to treat acne, suggests new research from Leeds Metropolitan University.   Student Kimberley Sanderson and supervisor, Dr Margarita Gomez Escalada, a Senior Lecturer in Microbiology and Genetics at Leeds Metropolitan, found that a solution using the common herb thyme (known as a tincture) was more effective in killing the acne bacterium than traditional chemical-based creams. The research has been presented at the Society for General Microbiology’s Spring Conference in Dublin this week. Acne is caused by a bacterium called Propionibacterium acnes which infects the skin pore and then forms a pimple. Currently, the most common treatments for acne are antibiotics.