How to Spot High-Quality Indian Hair Extensions in a Crowded Market. The hair extension industry is a multi-billion dollar world where every vendor claims to offer "100% human hair" or "Grade 12A quality." However, if you have been in the hair game for a while, you know that marketing labels can be incredibly deceptive. The market is currently flooded with hair that has been chemically stripped, coated in silicone, or mixed with synthetic fibers—all while...