Sweet Fennel Shampoo Bar
 
 
Shampoo bars offer a low carbon footprint.
 
They’re filling the need and market for sustainable, green, biodegradable formulations and reducing plastic waste as there is no need for a plastic container. Very few plastic containers are recycled and most shampoo plastic bottles are not.
As mentioned, these solid bars are more light-weight and compact than their bottled counterparts, so they require less space during transport relative to the same amount of washes with liquid shampoo.
Most people find benefits to switching to a shampoo bar such as increased volume, faster growing hair, reduced dandruff, shinier hair and less frizz. 
 
Surfactant-based solid shampoos are formulated to be the closest to liquid shampoos – minus the water. These shampoos contain a rich concentration of surfactants, which are cleansing (and foaming) agents that help to cleanse away oil and dirt impurities from your hair.
These shampoos are typically lower in pH and thus, will not disrupt the oil balance on your scalp.