Have you looked into the so-called 'bleach bath' process for dealing with excessive tangles? It's described here:

http://www.diylacewigs.com/2016/06/how-d...leach.html

and the actual recipe for the ingredients are here:

http://www.diylacewigs.com/2016/06/how-t...y-wig.html

I believe the author of this blog posts here occasionally. Hope this helps.