In the evening, apply a combination of Retinol, Hyaluronic acid, and Vitamin C on your skin. This combination is known as the beauty trifecta, and it helps to reduce the appearance of fine lines, dark spots, and brighten the skin. Both Retinol and Vitamin C are essential in increasing collagen production, which is a vital protein responsible for maintaining the skin's elasticity and firmness. As we age, collagen levels naturally decline, leading to the appearance of wrinkles and sagging. By promoting collagen synthesis, these ingredients work together to combat these signs of aging over time.