Scalp microbiome research, personalized diagnostics, regulatory change, and digital-first retail are reshaping hair care innovation. According to a research report by Mordor Intelligence, the hair care market is valued at USD 101.52 billion in 2026 and is projected to reach USD 122.60 billion by 2031, advancing at a CAGR of 3.85%. Growth is being shaped by demand for scientifically validated...