What are the halachic issues involved in hair dyeing for women? Most importantly, does hair dye constitute a chatzitza for mikvah? Also: are there any communities that forbid hair dyeing altogether? ...
Why is moisture a chatzizah for netilas yadayim? I guess you can say that the hands must be completely clean, but then why don't you have to wipe your hands in middle? For example, one who washes his ...