Yeah I'd DEFINITELY wash, I do it 3-4 times before cutting in, plus mist with a 'water/conditioner' mix inbetween times lol. New hair tends to a bit wiggy looking (depending on the density) & as Paul explained, washing hairpieces calms the hair down. If you actually wash it first for your piece of mind (as most wearers do), realistically, how will the stylist ever know? Regards