Does dish soap expire?
Barely — no major brand prints a date on the bottle, and Seventh Generation, one of the few to publish a figure at all, recommends "an average shelf life of two years."
Updated
- Sealed
- About 2 years
- Opened
- About 2 years
Sealed: About 2 years Tier 1
Seventh Generation states it plainly: its "cleaning products don't list a specific expiration date, but we do recommend an average shelf life of two years." Most dish soap carries nothing at all, so two years is the working number, and the same page's general rule is the floor under it — "most products will last at least one year if stored correctly (in a cool, dark place)."
After opening: About 2 years Tier 1
The two-year figure does not split into opened and unopened, and the bottle explains why: dish soap lives in a squeeze bottle with a flip cap that is barely closed at the best of times, opened or not. What ages it is water leaving through that cap and the blend settling out — a bottle that has gone thick, thin or cloudy has separated, not spoiled.
How to tell it's gone off
- It has separated into layers, or looks cloudy where it used to be clear.
- It is noticeably thinner or thicker than a fresh bottle of the same product.
- Almost no scent left when the cap is open.
- The suds collapse quickly and a sink needs a second squeeze to get through the same load.
If you use it anyway
Harmless
Old dish soap is a non-event. It thins, it separates, it loses its scent — and it goes on cutting grease. The worst realistic outcome is a bottle that wants a shake and a slightly bigger squeeze. Nothing it touches is harmed, nothing is wasted but a second or two, and no manufacturer prints a date telling you otherwise.
Dish soap is a surfactant blend held in water. Given long enough the blend stops being evenly held: it separates, water evaporates through the cap, and the fragrance goes first because it is the most volatile thing in the bottle. None of that is spoilage. The soap does not turn into something else — it stops being mixed, and it thins.
Every page here commits to one of four states — Harmless · Degraded performance · Equipment damage · Safety issue. How the verdicts work.
How to store it
Seventh Generation's own condition on the two-year figure is the ordinary one — "a cool, dark place." Under the sink qualifies; a sunny ledge over the sink is where a bottle goes cloudy and loses its scent first. Keep the cap shut between uses so the water stays where it belongs.
Sources
- Tier 1 · manufacturer
Seventh Generation — 5 expiration dates you probably don't check
Checked 2026-08-27. The brand's own published figure; it covers Seventh Generation cleaning products as a range, not dish liquid alone.