What is the concept of whitening? How to whiten best?

Melanin is a protein found in the basal layer of everyone's skin. Ultraviolet rays will cause changes in melanin to produce a substance that protects the skin, and then the melanin moves through the layers of cell metabolism to the epidermis of the skin, forming the skin problems we see such as pigmentation and uneven skin tone. Most whitening products on the market are based on vitamin C. Ellagic acid has extremely high antioxidant properties, which can help the skin inhibit and regulate the production of melanin, and reduce the appearance of dark spots. In addition to choosing whitening products, it is also important: starting from the external protection of the skin from ultraviolet rays, sun care should be done throughout the year. You should use sunscreen regardless of whether you work indoors or outdoors, and outdoors in hot summer At times, be sure to bring a parasol and sunglasses with UV protection. What foods can whiten? Peas, white radish, carrots, asparagus, sweet pota...