Detailed answer

Sun damage can cause dullness in the skin over time. To avoid this, it's important to protect your skin from the harmful effects of the sun. Start by using a broad-spectrum sunscreen with a high SPF (at least 30) every day, even on cloudy days. Apply it generously and reapply every two hours if you're spending a lot of time outdoors. Additionally, limit your sun exposure, especially during the peak hours of 10 am to 4 pm when the sun's rays are strongest. Seek shade, use umbrellas, or wear wide-brimmed hats to protect your face from direct sunlight. Wearing protective clothing is also crucial in preventing sun damage. Opt for lightweight, long-sleeved shirts, pants, and wide-brimmed hats that cover as much skin as possible. Don't forget to wear sunglasses that block both UVA and UVB rays to protect your eyes and the delicate skin around them. Furthermore, incorporating products with active ingredients like vitamin C and retinol into your skincare routine can help combat dullness caused by sun damage. Vitamin C has antioxidant properties that can brighten the complexion and even out skin tone. Look for serums or moisturizers that contain stable forms of vitamin C, such as ascorbic acid or magnesium ascorbyl phosphate. Retinol, on the other hand, is a derivative of vitamin A and is known for its skin-renewing properties. It can help stimulate collagen production, improve skin texture, and reduce the appearance of sun damage. Start with a low concentration and gradually increase it to minimize potential irritation. In conclusion, to avoid dullness caused by sun damage, protect your skin by using sunscreen, limiting sun exposure, wearing protective clothing, and incorporating products with vitamin C and retinol into your skincare routine.