The carbon footprint to make a 500ml (16.907oz) plastic bottle (for water) is about 83g of carbon dioxide. This covers the entire process of fossil fuel extraction, processing, packing, shipping and consumption of the bottle.
What is the carbon footprint of a plastic bottle?
Processing plastic resins and transporting plastic bottles contribute to the carbon footprint of a bottle in a major way. Estimates show that one 500-milliliter (0.53 quarts) plastic bottle of water has a total carbon footprint equal to 82.8 grams (about 3 ounces) of carbon dioxide.
Much like plastic water bottles, shampoo bottles are plastic and end up in landfill. Plastic can take many years to break down and decompose. During this time, it will break down into smaller microplastics, which can then end up in our ocean and killing marine life. To make matters worse, plastic absorbs toxins from its environment making it even more lethal to any wildlife consuming it.
Healthier for you
Shampoo bars are typically healthier for your hair than detergent-based liquid shampoos because they are made without parabens, sulfates, phthalates, silicone, and synthetic fragrances. This means less damaging and stripping your hair of its natural oils, which can happen with chemical-based products.
Source: Sciencing, Jun 11, 2018