What is the shelf life of your hair color?

asked by judy w. on 6/9/17

1 Answer
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Direct sunlight - It will warm up or heat the chemicals, causing them to separate and rendering the dye useless.

Air - Air causes rapid oxidation. If the product contains peroxide, it will interact with the oxygen in the air and cause the dye to go bad.

Moisture - Moisture damages packaging if the hair dye comes in a box, and can lead to oxidation as well.

Micro-organisms - Bacteria and microorganisms can interact with the chemicals and thrive in the ammonia present in the dye, causing several chemical reactions that will cause the dye to go bad.
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