Nifdo is a USA brand who is manufactureing whitening creams for women and for men, and also developing whitening serum for women and for men. NifdoWhitening cream lightens dark spots on the face. It provides the necessary hydration and prevents the skin from drying out. It softens and whitens your skin. This highly concentrated serum removes existing and reduces the appearance of new hyperpigmentation and evens out skin tone. dietary supplement. Food that contains concentrated amounts of nutrients or other substances that are intended to supplement the usual diet.