Many oral vitamin C defense products provide about 1,000 mg of vitamin C per serving.
Vitamin C formulas often include vitamin D and B vitamins; some also list zinc, folate and electrolytes.
Topical vitamin C items commonly advertise brightening and improved tone, hydration and plumping of fine lines, plus protection against daily environmental stressors.
Topical vitamin C serums in the results commonly come in 1 fl oz or 4 fl oz bottles, while mineral spray sunscreens are often shown in 6 fl oz packages.
Oral formats are offered as flavored gummies and drink-mix powders, with flavors noted such as natural strawberry, orange and pineapple, and an orange-flavored powder option.