Sunnats and aadaab of wudhu

Q: Does permanent ink affect the validity of wudhu and ghusal?

Q: When I was doing wudhu for fajr, I checked my eyes for any dirt in the sides, and found some in my left eye, so I cleaned it and rubbed both eyes. But after I finished fajr prayer, I found some dirt besides the right eye. I had not seen this dirt during wudhu. The dirt was dry and 3mm thick. Will my Salaah and wudhu be valid?

Q: Is my ghusal and wudhu valid if I dye my hair? Is my salah valid?

Q: I have just recently become baaligh. I have been performing all my salaah and have not missed any. However, I used to make "wudhu" while showering. One day, I realised that sometimes while showering I did not wash my face and make masah (faraaidh of wudhu). I cannot recall how many salaahs I have performed in this manner. Please advise what I should do.

Q: Can you say bismillah in a bathroom when you do wudu, bathroom might have a toilet or might not.

Q: During wudhu, if a person forgets to wash a limb and only remembers after washing another limb, what should he do?

Q: When I perform wudhu for salaah, I sometimes forget to put water in my nose and instead go straight to washing my face. After I wash my face, when I realize that I did not put water in my nose, then what should I do? Should I restart the entire wudhu from the beginning or should I just put water in my nose and continue?

Q: I want to know whether ghusal and wudhu can be done in a bathroom? As it is wellknown that toilet and bathroom are combined these days so is the wudhu valid?

Q: I did ghusl and wudu and prayed salah. After salah I realized I had some black residue on my eyebrows and a little on my eyelid and eye (residue for all areas mentioned was eyeliner) but this wasn't clearly visable. Even though I washed my face several times also the head area so I assumed everything was washed off. I am now concerned whether my prayer has been invalid. 

Q: I have a fungal infection in my beard, and my beard is very thick so I have been advised not to wet the skin below the beard when making wudu; beacause my beard is very thick. I know I dont have to wet the skin but can I avoid putting a handful of water and making khilal of my beard?