Is it haram to wear artificial nails?

Clothing, jewelry & body

In some markets there are beautification items such as fake nails, fake eyelashes and colored contact lenses to change your own eye color. These cosmetic items are in great demand as they are widely used among women.

Your Eminence, we ask you to guide us to the correct judgment. May Allah protect you with His guidance!

It is not allowed to wear fake nails, fake eyelashes and colored contact lenses as these are harmful to the body and as they are deceiving and as they change the creation of Allah.

May Allah grant us success! Peace and blessings be upon our Prophet, his family and his companions!

The Standing Committee on Scientific Research and Legal Matters
(Bakr Abu Zayd, Salih Al-Fawzan, Abdullah ibn Ghudayyan, Abdul-`Aziz ibn `Abdullah Al-Shaykh)

Fatawa al-Lajnah ad-Daima

What is the verdict on fake fingernails {الأظافر}? I would do my best not to see them by any man.
Is there the same judgment about this as about hair extensions {الواصلة}, which is reported in a hadith?
Artificial nail extensions have no base and are not allowed. Rather, it is waajib (compulsory) and Sunnah to cut them (the nails) at least (every) 40 nights.
Anas (radiallahu anh) said:

{وُقت لنا في قص الشارب وقلم الظفر ونتف الإبط وحلق العانة ألا ندع هذا أكثر من أربعين ليلة.}

"We have been given a time to trim our mustache, cut our nails, pluck underarm hair and shave our pubic hair, and we shouldn't refrain from doing this for more than 40 nights."[1]
In another wording:

{وقت لنا رسول الله صلى الله عليه وسلم ...}

"The Messenger of Allah (salla-llahu alayhi wa sallam) has set a period for us ..."[1]

Therefore, men and women are advised to have their nails cut at least every 40 days. Then how can she have (long) nails? This is munkar (reprehensible) and has no basis.

Shaykh Abdulaziz bin Baz, rahimahullah

From an audio recording of the Shaykhe

Translated by Seyyid at-Turki

[1] Muslim, Book: Taharah, Chapter: Qualities of Fitrah, No. 258