Used as a natural dye in histology for staining cell tissues, particularly in microscopy to highlight cell nuclei and structural components. Commonly applied in biological laboratories for demonstrating elastic fibers and connective tissues.

Also utilized in traditional medicine and biochemical research for its antioxidant, anti-inflammatory, and antimicrobial properties.

Serves as a pH indicator due to color changes in different acidity environments and as a metal ion indicator in laboratories, forming colored complexes with certain metal ions.

Employed in the textile industry for eco-friendly dyeing of fabrics such as cotton, linen, and silk, producing shades from brown-red to purple-red depending on the mordant used. Popular in crafts and arts for natural coloring.