Conditions & Fundamentals of Hajj and Umrah

Q: I performed my first Umrah and removed all my hair with a zero trimmer. After 2-3 days, I performed a second Umrah and removed my hair using the same zero trimmer (though the hairs were very few). I was in doubt as to whether it was correct for me to use the zero trimmer. Since I had a doubt, I used a blade when I made the next 3-4 Umrahs after that. Was it correct for me to use a zero trimmer or was it necessary for me to use a blade?

Q:

1. Can I wear sunglasses when making tawaaf for umrah and hajj? 

2. Can I wear perfume at the time of tawaaf for umrah and hajj?

Q: I would like to know what kind of slipper I can wear in the state of ihraam. Is it a must to wear a 2 belt slipper or I can wear the slipper which is open in the front and back?

Q: Can someone who doesn't have a knowledge of the holy Qur'aan perform Hajj?

Q: Can a patient who has a urine problem perform umrah by wearing a pamper (diaper) in tawaaf?

Q: I work as a flight attendant for an airline. Sometimes when I come to Jeddah, once I come to the hotel, I shower and put on my ihram on and go and do umrah. Is this ok?

Q: Is it permissable to make tawaaf for family members who are not present in Umrah.

Q: My father sadly passed away this year and I would love to go for umrah, can I go with my grandmother's sister and her husband? He is over 70 years old and he is like a grandfather to me. I am 25 years old.

Q: If one is in Makkah and visits Taif then returns to Makkah, does one need to don the ihraam again?

Q: I want to go to Makkah for ziyarat but not with niyyat of umrah. Is it allowed to go to Makkah without ihraam? I live in Dammam and as per my visa I am not allowed to do umrah. So I can’t do umrah. Also I haven’t done umrah before so can I visit Makkah?