* The specific dye: Different brands and formulations have different lasting power. Some are designed to fade faster, while others are more permanent.
* Your hair type: Fine, porous hair tends to hold color less well than coarse, thick hair.
* Your hair color: Darker hair tends to hold color longer than lighter hair.
* Your hair care routine: Using color-safe shampoos and conditioners can help prolong the life of your dye.
* Your exposure to sun and heat: Sun and heat can fade hair color faster.
Generally speaking, store-bought hair dye will last:
* Temporary hair dye: Lasts for 1-2 washes, sometimes up to 5-7 washes.
* Semi-permanent hair dye: Lasts for 6-8 washes, up to 28 washes.
* Demi-permanent hair dye: Lasts for 28 washes, up to 8 weeks.
* Permanent hair dye: Lasts for 6-8 weeks, up to 12 weeks.
Remember: These are just estimates. The actual lifespan of your hair dye will vary depending on the factors mentioned above.