Pearl powder has been used for centuries in Traditional Chinese Medicine (TCM) and other traditional health systems, primarily for promoting healthy skin, hair, and nails. In TCM, pearl is believed to nourish the yin, calm the spirit, and support the body's overall vitality, which is thought to include benefits for hair such as promoting growth and improving luster. Historical texts often mention pearl as an ingredient in beauty formulas intended to maintain youthfulness and enhance appearance, including hair health.

However, modern scientific evidence supporting the use of pearl specifically for hair health is limited. Most studies on pearl powder focus on its effects on skin, wound healing, or antioxidant properties. There is some biochemical rationale, as pearl contains amino acids, minerals (such as calcium and magnesium), and trace elements that are important for general tissue health. Nonetheless, direct clinical studies linking pearl ingestion or topical application to improved hair growth or quality are lacking. The traditional use is well-documented, but the scientific validation for hair-specific benefits remains minimal. Therefore, the evidence supporting pearl for the hair body system is primarily rooted in tradition rather than robust scientific research.