It takes about two days to get a cold after exposure to the virus. In this video, Larry Gooss, DO, a family practice doctor at Chippenham & Johnston-Willis Hospitals, explains how virus can continue to live on surfaces.
A RealAge answered. To prevent vitamin C deficiency, government guidelines recommend a daily dose of 90 milligrams (mg) for men, 75 mg for women. We recommend that you get 1,200 mg of vitamin C per day from food and supplements. This higher amount not only prevents deficiency but also helps prevent disease and needless aging.
You can take vitamin C orally or apply it topically. Keeping on top of your vitamin C intake can help you build collagen and prevent scarring. Women need 75 mg of vitamin C daily, and men need as much as 90 mg. Acne-prone teenagers ages 14 to 18 need smaller amounts: 65 mg for girls and 75 mg for boys.itamin C plays an important role in skin repair, including the healing of acne scars. It is a water-soluble vitamin, meaning it is not stored in your body, so you must ingest it daily. If you are acne-prone, talk with your dermatologist about vitamin C. She may advise you to take a supplement or use a vitamin C cream.