Detailed answer

Moisturizers that contain heavy oils or silicone-based ingredients can sometimes create a barrier on the skin's surface, which can lead to a dull appearance. Additionally, some moisturizers may not effectively hydrate the skin or provide essential nutrients, resulting in a lack of radiance. It is also possible that certain moisturizers may not be suitable for your specific skin type, leading to dullness. It's important to choose moisturizers that are lightweight, non-comedogenic, and contain ingredients like hyaluronic acid or glycerin, which can help retain moisture and promote a healthy glow. Additionally, regularly exfoliating your skin can remove dead skin cells and improve brightness. If your skin continues to look dull after using moisturizers, it may be beneficial to consult with a skincare professional for personalized advice and recommendations.