THIS study was carried out to use the seashells and sand powders as natural materials to reduce color of crude soybean oil compared with synthetic bleaching earth during its refining process. Some chemical properties, e.g. acid, peroxide and thiobarbituric acid values as well as effect of bleaching earth, sand and seashell treatments on fatty acid profiles of crude soybean oil were studied. The color of crude soybean oil was determined and the percentage of removal of red color was calculated. The results showed that removal of red color of crude soybean oil treated with seashells and sand powders was higher than bleaching earth and the highest removal was observed using seashell powder. The addition of seashells and sand powders to soybean oil during itsbleaching process retarded the red color of soybean oil.Seashells and sand powders a significant (P ≤ 0.05) enhanced the acid, peroxide and thiobarbituric acid values of crude soybean oil.