There should be an expiration date on the box..I have had color on the shelves for 2 years and it is still good.....usually you can tell if you hold the color bottle up to the light and can still see through it...If it is in a tube even longer....again when you open the tube it should not be oxidized....(dark in color)How long can I keep an unopened box of hair color?
Check the box and see if it has an expiration date or they should have a 1 - 800 number on there. Call that and ask them.
long as you put it in the fridge it will last a month
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