Grapefruit seed extract (GSE) is derived from the seeds, pulp and membranes of grapefruits. It can be self-made by grinding the seeds and pulp and mixing with glycerine (1). Commercial versions are made via an industrial chemical process and preservatives are added (3).
The extract is believed to have natural antimicrobial, antiviral and anti-fungal properties (1). [...]
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Tagged: antimicrobial, benzethonium chloride, grapefruit seed extract, GSE, Todd Caldecott