Blueberry. 8 ounce. Benefits of yogurt in your hair.. Yogurt, as we all know is a best remedy both for the skin as well as for the perfect hair growth. Yogurt contains a high percentage of lactic acid. The milk proteins in yogurt instantly nourish hair cuticles while adding natural volume. Yogurt's rich proteins will also assist in strengthening your strands. It will also help soften dry and brittle strands while imparting a beautiful shimmering shine.