"Bar soap requires one-fifth of the energy to produce compared to liquid soap. Specifically, liquid soaps require five times more energy for raw material production and nearly 20 times more energy for packaging production than bar soaps. Making liquid detergents produces about 10 times the greenhouse emissions as making simple soap. This is due to the energy-intensive production of synthetic surfactants and the packaging requirements. Liquids are also packaged in plastic that is not always recyclable and contributes to ocean pollution."
"The packaging difference is substantial: producing packaging for liquid soap requires 19 times more energy than packaging for bar soap, according to the Swiss research. Additionally, distributing liquid soap creates nearly eight times as many carbon emissions as an equivalent amount of bar soap, because liquid soap is mostly water being transported in bulky, irregularly shaped containers."
"One life cycle analysis also found that solid soaps contain fewer ingredients harmful to human health and the environment than liquid soaps. The British website Ethical Consumer confirms that bar soaps are less likely to contain petroleum, use less plastic packaging, and produce lower transportation emissions than liquid soap. Among their recommended brands, Bentley Organic and are available in the U.S."
Simple bar soap cuts greenhouse emissions by about one-third compared with liquid soap and requires one-fifth of the energy to produce. Liquid soaps require five times more energy for raw material production and nearly twenty times more energy for packaging than bar soaps. Making liquid detergents produces about ten times the greenhouse emissions of simple soap because of energy-intensive synthetic surfactant production and packaging needs. Packaging for liquid soap requires nineteen times more energy, and distributing liquid soap creates nearly eight times the carbon emissions due to transporting water in bulky plastic containers. Solid soaps contain fewer harmful ingredients.
Read at Earth911
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