Sheitel vs. Shterntichel
Rivka K. commenting on A Toupee As A Yarmulke:
I personally would think that a man would still need to wear a yarmulke, but I remember that Rabbi Moshe Feinstein zt"l once answered a question on this in Igros Moshe and very reluctantly permitted a man only to wear a toupee without an accompanying yarmulke.
If a woman wears a beautiful sheitel that causes men to look at her instead wearing of snood she is technically fulfilling the mitzva of Kisui HaRosh but not the intent (that is why I wear a snood).
The Lubavitcher Rebbe wrote in a sicha on Rosh Chodesh Elul 5714 that:
"When a Jewish woman walks in the street without a sheitel there is no (discernible) difference between her and others. However, when she wears a sheitel one can tell that here is a Jewish religious woman."
Sometimes I cannot distinguish between a good sheitel and real hair. However, I always know a snood when I see one!!
Finally, I have read that the Lubavitcher Rebbe was against women wearing kerchiefs. Yet, on page 60 of Me'ir Einei Yisrael it says that the Baal Shem Tov's wife Sarah wore a "Sherntichel" - a decorated kerchief.
How do you explain this one?? I don't think anyone would claim that the Baal Shem Tov's wife was not frum enough!
Mishmar: Rav Shlomo Zalman Auerbach on (Certain) Sheitels