The amount of shampoo a person uses in a lifetime can vary significantly based on factors such as hair length, frequency of washing, and amount used per wash. On average, a person might use about 1/2 to 1 fluid ounce of shampoo per wash. Assuming someone washes their hair every other day and lives to be around 80 years old, they could use approximately 730 to 1,460 fluid ounces, or 5.7 to 11.4 gallons, of shampoo in their lifetime.
1,000
It depends on the person and how much hair supplies the person uses.
Most people in the 21st century will use about 2345678 million gallons per lifetime if they live 100 years
It's not good to use shampoo too much because it can dry out your hair.
236
Out of shampoo, she was tempted to use dish liquid.Most people use too much shampoo. Shampoo contains surfactants that strip natural oils from hair.
stalker much?
The shampoo bottle will give you the dilution instructions. It will also say what area it will treat.
probably 14% but it varies from person to person
25
Rodent shampoo.
i use shampoo for hair to clean