Global Hair Wigs and Extensions Market Size, Share & Demand Report By Product Type (Full Wigs, Hair Extensions, Hairpieces & Toppers), By Application (Fashion & Aesthetic Use, Medical Applications, Entertainment & Media, Beauty Education & Training), By Distribution Channel (Online Retail, Offline Retail), By End-User (Individual Consumers, Medical Institutions, Institutional Buyers), By Price Range (Economy, Mid-range, Premium/Luxury), By Application Duration (Temporary, Semi-permanent, Permanent), By Region & Segment Forecasts, 2026–2031