How long will the stuff last? Mine is kept in a box, bottles sealed.
A year? Two years? Is there a tell-tall way to know it's gone bad?
How long will the stuff last? Mine is kept in a box, bottles sealed.
A year? Two years? Is there a tell-tall way to know it's gone bad?
After open 1 year, but I have got liquid which is older than 1 year and it is still ok.
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