My four year-old boys are hiyang with Suave for Kids shampoo. Their hair is thick, soft and shiny. My favorite is the orange-mango variant. They have been using this brand since they were 2 years old.
My kids are not hiyang with Johnson's (imported). Their hair was kinda dry and not as shiny when they used the brand, padala lang ni MIL.
Other brands we have tried: Enfant (smells good), Mustela (expensive), Burt's Bees (expensive) and Huggies (another fave). For now, we are sticking with Suave. Even my husband uses it LOL.