Hello,
I understand you are finding a person who will help you change your hair application. Since your description not mentioned details about your project's status and the changing you want me to make, I don't know requirements for this project but I have been working with C/C++, Qt and OpenGL for a long time (please see my profile for projects I have done on freelancer.com so far), I think I can help you with this. I hope we will have a discussion about this project so I can start working soon. Thank you very much!
Best regards,
Binh