I recently bought 10â human hair extensions from Sallyâs and I found them incredible. However, I plan to dye the hair extension in purple color for a prom party this weekend, and I am a bit apprehensive whether I can dye these, because the last that I bought from a local salon near to my home, just spoiled after I washed them after dying. Moreover, since the hair extensions are 100% human hair as mentioned on its packing, I want to confirm, from somebody who has used hair extensions extensively, whether I can just use plain water to wash out the dye this time. I would be really thankful for an appropriate advice from you guys, so please suggest!