what should we do if our kids hair is matured

A. By matured if you are willing to say if it is white in colour then I am very honestly telling you nothing can be done to reverse it but you can use proper oil and shampoo which will help in avoiding further whitening of the hair completely sulphate and chemical free shampoo and good oil like grandma secret and for shampoo I would recommend you to try bare anatomy kids or tuco and tikitoro both are good