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How long does Splat Hair Color last after it's been opened?

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Like any other dye, box dyes expire after a couple of years. This depends on the conditions of use though. For example, a box hair dye will go bad faster if opened and exposed to light and air. When mixed with things like hair color developer, it is likely to expire or get damaged sooner. read more

The creme developer and the permanent hair color in the kit are both 2 oz.'s so I measure out 1 oz. (2 Tablespoons - use plastic , not metal measuring spoon) of each and mix together and get 2 uses out of each kit. read more

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