- A method was developed to calculate the direct impact on human health from dermal absorption of chemicals in consumer products during use, called the Product Intake Fraction (PiF). - The PiF considers key variables like the rate at which chemicals leach from the product and the skin permeability coefficient. - Direct impacts calculated for a pacifier, hand soap, and shampoo were found to be of similar or higher magnitude than indirect life cycle impacts from product emissions and use. - This work introduces a novel method for including dermal exposure in life cycle assessment, which is currently an important pathway not fully addressed.