Effect of Soybean Oil Extract on Damaged Hair

This study investigated the effects of soybean oil extract on damaged hair by applying formulations with varying concentrations (0, 3, 6, and 9 g) to the hair. The results showed that soybean oil extract significantly improved the brightness, tensile strength, absorbance, and gloss of damaged hair, with notable differences observed particularly at 6 g and 9 g concentrations. The findings suggest that soybean oil extract can enhance the condition of damaged hair, and further research is recommended to explore the effects of other natural extracts on hair health.