Dihydroavenanthramide D is a natural alkaloid that exerts antihistamine, antioxidant, anti-irritation, anti-inflammatory, and anti-erythema effects. It has a good effect on relieving itching, irritation, and redness of sensitive skin. It is suitable for anti-inflammation and anti-sensitivity, soothing repair, antibacterial, oil control acne, enhanced skin immunity, and other products. Dihydroavenanthramide D can effectively inhibit pruritus, contact dermatitis, and neurodermatitis, and effectively reduce erythema.