Doris J. Day, M.D., is a board-certified dermatologist who specializes in laser, cosmetic, and surgical dermatology. She is a columnist for "Redbook" magazine and is frequently featured in such magazines as "In Style," "Vogue," and "Glamour," She's also appeared on the "Today" show and CNN's "Paula Zahn Now," Dr. Day was the consulting dermatologist for Good Skin, an affordable line of skin-care products by Este Lauder. She lives and works in New York City. Sondra Forsyth is a freelance writer whose work has appeared in "Ladies' Home Journal," "Family Circle," "Good Housekeeping," "Redboo...