The World Federation One Stop Fiqh

Ritual 254

As a matter of precaution, a pilgrim, in a state of ihram, should avoid whatever is considered to be beautification, whether or not he has the intention to beautify himself, including applying henna in the usual way.

However, it is permissible to use that which is not considered as beautification and is used for treatment, or the like. It is also permissible to apply it before wearing ihram, even though its effect continues while the pilgrim is in a state of ihram.