http://revach.net/article.php?id=4309

Section: Halacha   Category: Tshuvos
Klausenberger Rebbe: If Your Mother Did Not Wear A Shaitel
If someone is noheg to act in accordance with a certain chumra, in order to be released from that minhag he must be Matir Neder.  The Klausenberger Rebbe ztz"l was asked (Divrei Yatziv YD 55) if someone's mother would not cover her hair with a Shaitel only a Tichel, may her daughter be Matir Neder and wear a Shaitel.

The Klausenberger Rebbe brings a Maharashdam who says that a person may only be Matir Neder for a minhag that forbid something that is 100% mutar, yet the minhag was to be machmir.  However if there is a Machlokes HaPoskim and a person's minhag is to be machmir like the stricter opinion then Hataras Nedarim does not help.  This was also the opinion of the Chasam Sofer and the Maharam Schick.

In the case of wearing a Shaitel there are many poskim who forbid wearing a natural or even a synthetic wig, including the Ran, Ritva, Be'er Sheva, Rav Yaakov Emden, and the Divrei Chaim among many others.  Therefore since wearing a Shaitel is not permissible according to many poskim, even though many people rely on the poskim who permit it, if your minhag is to be machmir, Hataras Nedarim does not provide a way out.

In closing the Klausenberger Rebbe, makes an additional points. He says that since in this case the Hataras Nedarim is not valid according to many poskim, the issur of Nedarim may be even worse than the issur of wearing a Shaitel.

Important Note: We bring this tshuvah as a starting point for discussion and not to convey any halacha.  We try to convey the Tshuva to the best of our ability. We admit that our understanding may not be accurate. One should learn the tshuva to verify the accuracy of our interpretation.  Please understand that this Tshuva may not be the final word on this topic. One should consult a Rav before drawing any conclusions.