Many believe that washing their hair too much or too little can influence its fall, or even that the brand or type of shampoo can significantly modify their hair health.
Nothing is further from reality. Shampoos act externally and consequently do not have the ability to penetrate the scalp, if they did, it would be dangerous. They can modify the appearance of the hair but not the health.
Even a Rasta who has not washed his hair in years has the same risk of baldness as a professional athlete who washes it three times a day with any shampoo..
The same can be said for alternatives to shampoo such as vinegar or other degreasing potions. Specifically vinegar, which seems to have aroused some interest recently. It only has a slightly degreasing function however it can give a nice look to some hair types, but a good shampoo with conditioner will achieve much better results aesthetically.