There’s an old saying that no two snowflakes are alike, but that can be said for many things around us. For example, no two people are alike – even identical twins have differences that far surpass their likenesses. That includes everything from our styles to our thoughts and opinions. But physically, we tend to be quite unique to one another, especially when it comes to our hair and skincare needs. The issues we face stem from genetic factors and environmental influences and can even vary for one person based on their location. For example, I have normal skin in my hometown, but when I travel...