Get instant length and volume with professional clip-in hair extensions at World Hair Institute. Our clip-ins and halo extensions blend perfectly with your natural hair—no damage, no commitment. Great for everyday use or special events. Phone: +1 312-372-4008 Email: [email protected] Website: www.worldhairinstitute.com Address: 77 W. Washington Suite 1306 & 1307 Chicago, IL 60602 USA.