Tannagine is widely used in the leather tanning industry due to its ability to bind with proteins and form stable complexes. It helps in converting raw hides into durable leather by improving resistance to heat, moisture, and microbial degradation. Its astringent properties also make it useful in cosmetic formulations, particularly in anti-aging and toning products where it helps tighten the skin and reduce pore appearance. In addition, Tannagine is employed in water treatment processes to remove heavy metals and suspended particles by promoting coagulation and precipitation. It finds application in the pharmaceutical field as a stabilizing agent in formulations requiring protein precipitation or enzyme inhibition. Additionally, it serves as a binding agent in paints and printing inks, enhancing color stability and preventing flaking. Its natural origin and biodegradability enhance its suitability for eco-friendly industrial processes.