Can you shave the neck hair during The Three Weeks? I saw you cannot shave but the neck hair? Is that permissible? My neck hair is just not presentable.

ב"ה Shalom The Shulchan Aruch (תקנ"א :יב) does not distinguish between facial hair or hair elsewhere on the body. However, if for one's outer appearance will have influence on his Parnassa, then there are important poskim who allow it until the week of Tishah B'av.(See פסקי תשובות הערה 228, כי בא מועד כמ' כח, הערה קס"ה) All the best כל המתאבל על ירושלים זוכה ורואה בשמחתה