Answered by Shaykh Abdul-Rahim Reasat
I wear acrylic nails to prevent me from biting my nails. I remove them during my periods. Are my prayers valid?
I pray you are well.
Your prayers with the acrylic nails on will not be valid. This is because they prevent the validity of your wudu and ghusl. You’ll also have to make up any prayers you prayed with them on. [Shurunbulali, Maraqi al-Falah]
See if you can find an alternative method of stopping yourself from biting your nails. Keeping them short through regular clipping, as per the Sunna, may aid in this. You’ll also be rewarded for this, seeing it is one of the acts of the Fitra (the default state humans were created to be in) the din encourages: “From the Fitra are shaving the pubic region, clipping one’s nails, and trimming one’s beard.” [Bukhari]
May Allah make the matter easy for you.
Checked and Approved by Shaykh Faraz Rabbani