$3.00
Each bundle is 100g, normally 3 bundles is enough for a full head. If you want thick looking, you can order another bundle.
Yes, Hair is 100% human hair can be dyed, bleached and permed. However, frequently dyed and permed will do harm on hair, even destroy hair. We suggest that you go to the professional hair stylist to help you.
It depends on you Maintenace, treat it like your own hair and take very good care of it. usually human hair can last 6-12 months or longer.