Laskern,
See the argument between the Beer Sheva 17 or 19 and the Shiltei Hagiborim in Shabbos on the mishneh במה אשה יוצא”
All that has been extensively covered in previously posts I quoted many different poskim regarding the above. The main topic in concern was: a) whether the Heter included natural looking Pe’eh Nuchris that looks like ones own hair. b) The ones that prohibited PN as Maris Ayin if it is still relevant nowadays.