Hood Farmers' Pledge: no artificial growth hormones (to satisfy our consumers). Lightblock Bottle: better taste and nutrition. Excellent source of calcium; good source of vitamin C. Grade A Maine dairy product. Pasteurized. Homogenized. Research proves that light breaks down vitamins in milk. It can also cause oxidized or off-flavors. Hood's Lightblock Bottle protects milk from light. So you can be sure the Hood milk in this bottle has better taste and nutrition.