2. Efficacy: beauty beauty Efficacy: Chestnuts are rich in unsaturated fatty acids and vitamin C, which is beneficial to promote the human body to remove free radicals, reduce wrinkles, delay aging, and make the skin fair, smooth and elastic. Efficacy of lowering blood pressure and blood lipid: Unsaturated fatty acids in chestnuts are beneficial to reducing serum cholesterol content, thus effectively preventing symptoms such as hypertension, coronary heart disease and arteriosclerosis.