my advice to you is to cut the relaxer out and do the wn on virgin hair. and i say this from personal experience. i did a wn over a 4 year old relaxer once and my hair just began to break off. everyone's hair is different however so if you like a risk u can try it.
mod-cj, 3b/3c (spring factor of 5inches), high density, medium thickness and porosity.
the usual / hg: tressme naturals, pm the conditioner, sm smoothie, sm souffle, kccc, aussie freeze.