How long do Koh products last?Updated 3 days ago

Koh cleaning products don't spoil in the traditional sense, they don't ferment, grow mould, or go rancid like food does. They're stable cleaning formulas. Sealed and stored well at room temperature out of direct sunlight, what comes out of the bottle or box months later is essentially what went in. What can gradually change over time is effectiveness. Fragrances fade. Active ingredients (surfactants, enzymes, and so on) can lose some of their strength. Formulas may separate slightly, a quick shake usually fixes that. None of this happens overnight, it's a slow gradient. You'll typically know a product is past its best when lather is thinner than it used to be, the scent is much weaker, or cleaning takes a few extra passes. Each Koh product has its own recommended shelf life listed on its product page, and Koh's 12-month product quality guarantee covers manufacturing defects on tools and packaging.

To get the longest useful life out of Koh cleaning products, keep them sealed when not in use, store at room temperature in a cool dry spot, out of direct sunlight (UV breaks down formulas over time), and in their original packaging where possible (containers are tested with the formula they hold). Avoid extremes, don't store near radiators, ovens, or hot-water systems, don't leave product in a hot car or freezing garage long-term, and don't decant into other containers unless the product instructions support it (some formulas are designed for specific packaging and decanting can affect stability). For products kept properly, you can expect them to perform as designed throughout their recommended shelf life. Specific shelf life information for each product is on its product page.