Have you ever tried washing your hair with only water?

An acquaintance of mine once shampoo

Once, alternating with just water like this

They said they were going to wash their hair.

Anyway, since I wash it every other day

I thought washing my hair alternately with shampoo and water was basically the same thing.

I tried following along... but it didn't suit me ^^;;;;;

Before I started, I thought it wasn't good to use shampoo surfactants too often, but I've decided to just use them instead haha.