How Are Hair Products Used?

The usage of hair products generally depends on what type of hair product you are talking about. Also, instructions on how to use the products are generally given on the pack or bottle itself, to avoid confusing circumstances like the ones you are currently facing. For instance:

Shampoo is to be applied on to wet hair and rinsed after a bit of scrubbing. Conditioner is to be applied after shampooing your hair, and it is generally meant to be left in hair for a while before it is to be washed off. Also, if it is a leave in conditioner, it need not be washed off after application.

Serums are good for hair which has a thick texture, one has to simply take a bit on to the palm and apply it to the hair.

Lastly, hair spray is simply to be sprayed on hair, check the instructions to see if the hair is to be dry or damp.