Answered by Ustadh Waseem Hussain
Is it permissible to tan oneself using a tanning machine?
As long as the tanning does not entail any public exposure of the awra or harm to the body then it would be permissible to use it. But one has to seriously take the health risks of using a tanning machine into account before using it.
Additionally, one should consider the purpose of tanning. A wrong intention, like doing it to attract attention from the opposite gender, would make it impermissible. [Nahlawi, Durar al-Mubaha; Ibn Nujaym, Ashbah wa al-Nazair]
And Allah knows best,
[Ustadh] Waseem Hussain
Checked and Approved by Shaykh Faraz Rabbani