There’s a good chance you’ve been told you need  hyaluronic acid. It’s in almost everything now, from serums, moisturisers to toners. It’s marketed as the ingredient for hydration, glow, and “plump” skin. But somewhere along the way, it stopped being a helpful ingredient and became a default step. So the real question is: Do you actually need it? Hyaluronic acid is a humectant , which means it attracts and holds onto water. In simple terms:It helps your skin retain moisture . But here’s...