Your scalp needs a good detox after a period of being exposed to heat, dust and grime. You could either try out a clarifying shampoo or get your hair professionally clarified. Clarifying shampoos are detox for hair and you can usher in a new season with sparkling clean tresses. Try: Moroccanoil Clarifying Shampoo. A dip in the temperature can also lead to decreased humidity, which can make your hair flat. A good volumising shampoo and conditioner will make sure your locks stay shiny and bouncy in the winters. Try: The Schwarzkopf Bonacure Volume Boost Shampoo. It does wonders to flat hair by adding bounce and shine to it, without weighing it down.