How long can you keep a FLOSS without it going bad or the expiration dat??

Answer:
No real expiration date, but waxed floss will lose some of its flexibility and the wax will get 'chunky'. If it's Glide or woven floss, you can use it indefinitely.

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There's no expiration date on floss. =)

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if it rips or breaks when you try to use it its to old will last for years

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HELLO,
DENTAL FLOSS HAS NO EXPIRATION DATE. IT DOES NOT GO BAD.

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