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How long does mayonnaise (opened) last?
Updated 2026-05-13 · USDA FoodKeeper & FDA guidelines
After opening
2 months
2 months refrigerated
The short answer
Mayonnaise (opened) lasts as long as you store it correctly — which can mean anywhere from a few days on the counter to a year in the freezer. The numbers above represent best quality per USDA and FDA guidelines, not absolute safety limits.
Why these numbers vary
Opened mayo jar. Storage life depends on temperature consistency, humidity, packaging, and how fresh it was when you got it. Refrigerators that swing between 38°F and 45°F shave days off these numbers; vacuum-sealing or freezing extends them.
How to tell if mayonnaise (opened) is bad
- Yellow tint
- Watery separation that won't mix back
- Sour smell
- Mold (especially around lid)
Storage tips
- NEVER leave at room temp
- Use clean utensils
- Squeeze bottles last longer than jars
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Frequently asked questions
How long does mayonnaise (opened) last in the after opening?
Mayonnaise (opened) lasts 2 months in the after opening. 2 months refrigerated
How can you tell if mayonnaise (opened) is bad?
Watch for: Yellow tint; Watery separation that won't mix back; Sour smell.