Head & shoulders Smooth & Silky Shampoo is a shampoo that hydrates the hair while offering anti-dandruff properties for hair that shines. Designed for everyday use, the formula contains HydraZinc which works to fight the signs of an unhealthy scalp, while moisturisers help relieve dryness and prevent frizz and split ends. Dimethicone and guar work together to form a film around each hair shaft to smooth the hair.