Praise be to Allah.
It is permissible for a woman to remove facial hair by laser, subject to certain conditions:
· That this is done by a specialist female doctor. It is not permissible for it to be done by a male doctor except in the case of necessity.
Please see the answer to question no. 95891.
· That no harm results from using the laser, because of the general meaning of the words of the Prophet (blessings and peace of Allah be upon him), “There should be neither harming nor reciprocating harm.” Narrated by Ibn Maajah (2340); classed as saheeh by al-Albaani in Saheeh Ibn Maajah.
Concerning that, reference should be made to specialists. Ibn Muflih (may Allah have mercy on him) said in al-Adaab ash-Shar‘iyyah (3/97): It is haraam to treat sickness or apply to the eyes anything that is najis [impure], taahir [pure] but haraam, or harmful, and so on. End quote.
· That should not involve extravagant or wasteful spending; rather the hair should be removed by the normal means by which it is removed in such cases, with no need for spending large amounts of money, for something concerning which the most that can be said is that it is permissible or an adornment, whilst noting that some scholars differ as to whether it is even permissible in the first place.
Moreover, it makes no difference in the ruling whether that is done in Ramadan or otherwise; rather whatever is permissible at times other than Ramadan does not become prohibited by fasting.
See the answer to question no. 221496.
And Allah knows best.