The ruling on washing with types of shampoo containing eggs and lemon

Q: A woman asks and says: There are some creams or shampoos that are applied to women's heads and used to wash the hair. They contain blessings from Allah, such as eggs and lemon, for example. What is the ruling on using them? Especially since women use them and then rinse them off with water inside the restrooms, where they mix with impurities. Please inform us, may Allah reward you.

A: There is no harm in using it for the benefit of the head, such as for medical treatment. There is no objection to treating with eggs, wheat, or other foods; because a permissible thing that has benefit, there is no objection to treating with it. This is based on his saying (peace and blessings be upon him): And if eggs and the like are placed on the head for treatment, and they have rotted and become unfit for eating, then there is no harm in washing them off in the bathrooms.