It is forbidden for a pilgrim, in a state of ihram, to kill lice on one's body or throw them from one's body or clothes, as a matter of precaution. Yet, there is no objection to moving them from one place to the other.
If they are killed, the kaffarah should, as a matter of ihtiyat, be feeding the poor As for mosquitoes, gnats and the like, it, as a matter of precaution, is better to avoid killing them, so long as they do not harm the pilgrim.It is permissible, though, to kill them to protect oneself, although one should, as a matter of precaution, avoid doing so.
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.
It is permissible for a pilgrim, in a state of ihram to wear a ring, not for beautification but as a mustahab act, for safe keeping, or for the purpose of counting the rounds of tawaf . However, as a matter of precaution, wearing it for ornamental purposes must be avoided.
It is forbidden for a lady, in a state of ihram, to wear ornamental jewellery, unless she customarily wears them before getting into a state of ihram. However, she should not show them of to her husband or, as a matter of optional precaution (al ahwatil awla), to any male, among her mahaarim. There is no kaffarah on beautification in all these situations.
It is not permissible for the pilgrim, in a state of ihram, to apply oil to the body, even if there is no perfume or scent in it, unless it is applied for necessity or treatment.
If the oil, which contains perfume, is applied deliberately, the kaffarah is a sheep; if it is applied out of ignorance, as a matter of precaution, a poor person should be fed as the penalty.