"Refillable (without published refill rates)"

Refillable packaging is genuinely lower-impact only when refills are actually used at meaningful rates and the refill format uses materially less packaging than the primary. Heavy glass and metal refillable systems designed as a premium aesthetic feature can consume more raw material per use than a recyclable plastic alternative if refill frequency is low. Brands that headline 'refillable' without publishing refill-rate data are making an unverifiable sustainability claim.