Thai herbal inhalers, like TIGER Balm and POY SIAN Balm, can last anywhere from a few months to over a year, depending on usage; with regular, multi-daily use, they might last 2-3 months, while lighter use can stretch it to 6-12 months or longer as the scent gradually weakens but the herbs remain potent due to their antimicrobial properties, though they typically have a 3-year shelf life from manufacture.
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