2 in 1
2 in 1 means that the bottle contains both
the shampoo and the conditioner all mixed into one liquid.
Anyone using the 2-in-1 will not have to buy a shampoo and a
conditioner separately. Using a 2-in-1 is very convenient when
you do not want to spend more time in the shower or bath
washing your hair. Many men use the 2-in-1 shampoo and
conditioner to save time.
Some of the major household brands such as
Herbal Essences have made the 2-in-1 line of shampoo and
conditioner and they sell very well.
Below are some 2-in-1 product reviews: