Is straightening one's hair okay if they don't like having curly hair and their society widely accepts it as masculine?
Kitzur Shulchan Aruch chapter 171 halacha 1
It is forbiden for a man to wear even one garment that is designed as a woman's, although he is dressed in a manner that clearly indicates that he is a man." ... "This prohibition does not apply to clothes alone. A man is forbidden to wear or employ any ornament or beautifying practice that is unique to women in his particular community.
"in his particular community": what if a person has no "community" and there are lots of people who straighten their hair that are males? In some places like the US, males straighten their hair and even have it slightly short. Would this be allowed in this case?