Thanks for the query Skin is the mirror of internal health. Workouts are good for your skin, but crash diets and inadequate nutrition always takes a toll on hair and skin. You must take a healthy balanced diet. Iron and biotin rich food and supplements will help. Other than that, a good skin care regimen comprises 4 steps - cleansing, toning, moisturizing and sun block. Based on your skin type, a dermatologist will recommend you appropriate products.