Q: What is the ruling on the Muhrim's (pilgrim in the ceremonial state for Hajj and `Umrah) washing their hands with scented soap, such as Lux, during Ihram (ceremonial state for Hajj and `Umrah)?

A: There is no harm in doing so, in sha’a-Allah (if Allah wills), because it is not called a perfume and its user is not actually applying perfume. However, it will be much better if a Muhrim uses odorless soap, as a matter of piety. This is because the Prophet's (peace be upon him): "Leave what causes you doubt and turn to what does not cause you doubt."

[Fataawa Shaykh Ibn Baaz]