Like many ingredients touted as beneficial in skincare products, you can add activated charcoal to the list of "newest fads."
Yes, vitamn C is good for you. As an essential vitamin, one that the human body cannot manufacture or store, it must be included in your daily diet, acquired from natural sources, like citrus fruits and green leafy vegetables, or taken as a supplement. Adequate vitamn C is necessary for the formation of connective tissue, for the absorption of iron, and important in wound healing. Too little vitamin C leads to bleeding gums and general muscle weakness. Too much vitamin C results in diarrhea, nausea, vomiting, even kidney stones.
Although they contain the same exact ingredients, generic skincare products are NOT necessarily the same as "brand" products.
According to the FDA's Cosmetic Labeling Guide and the cosmetic labeling regulations themselves (21 CFR parts 701 and 740), all over-the-counter (OTC) skincare products must have a listing of the ingredients contained in that product in descending order of predominance. And although the ingredients themselves are listed, the exact recipe or formulation is not. The information that is not listed includes:
MYTH: Skincare products containing "Natural" ingredients are safer and more effective.
Parabens are preservatives, a class of compounds that prevent the inevitable overgrowth of a wide spectrum of bacteria, fungus and yeast from contaminating a skincare product. Parabens are effective, very stable compounds and lack side effects. Parabens are derived from PHBA, para-hydroxybenzoic acid, which occurs naturally in many fruits and vegetables including carrots, onions, and blueberries. But they have a bad reputation.