A glass of wine every now and then, or a delicious cocktail, will not hurt you. They even say that alcohol is good for digestion. However, alcohol also speeds up dehydration. Since your hair needs moisture, regular consumption of alcohol would not be considered a contribution to your healthy hair journey. Further, regular and continuous use of alcohol can reduce the level of zinc in your body. This could lead to hair loss, since we do need zinc for healthy hair growth.