Do I need to compensate the hotel for my hair fading to the pillowcase when I stay in the hotel?

Whether the hotel needs compensation depends on the relevant policies of the hotel and the difficulty of cleaning the hair dye.

First of all, if the hotel's policy clearly stipulates that compensation is needed, then it is undoubtedly necessary to follow the policy. On the other hand, if there is no explicit provision in the hotel policy, it can be considered according to the difficulty of hair dye cleaning. If the hair dye is easy to clean, it may not need hotel compensation; If the dyeing time is long and the traces are difficult to clean, which may bring trouble to the cleaning work of the hotel, then it may be necessary to consider compensating the hotel.

It should be noted that these decisions are not only about money, but also about morality and fairness. So in the face of this situation, it is best to communicate with the hotel staff and find a reasonable solution.