With the recent arrival of winter, my skin has become more sensitive and my existing freckles have become more noticeable, which has been a concern. Heating dries out my skin, making it more sensitive to irritation. So, rather than seeking treatment, I'm more interested in recommendations for freckle management products that I can use consistently at home. What ingredients should I focus on when choosing freckle management products that are safe for sensitive skin? If you have any recommendations for freckle management products that actually help manage freckles, such as vitamin C, niacinamide, or whitening functional cosmetics, I'd love to hear about them. I'd also like to know your criteria for recommending freckle management products that can be used long-term without irritation.