For how long could the khadi hair dye powder be stored?Updated a month ago
The powder can be safely used for 6 months after opening if it is stored in a dark, airtight place that is not too warm (room temperature). Unopened, it can usually be kept for 3 to 5 years after purchase. If you notice that it has become damp or that the powder has changed color in places, you should no longer use it.