Listed below are the sources I use to gain knowledge and provide definitions.
Cote, K. (2016). Smellgoods: How to use & blend essential oils in handmade soap & skincare. Kendra Cote.
Faiola, A. M. (2019). Milk soaps; Making milk-enriched soaps from goat to almond. Storey Publishing.
Faiola, A. M. (2016). Pure soapmaking; How to create nourishing natural skin care soaps. Storey Publishing.
Faiola, A. M. (2013). Soap crafting. Storey Publishing.
Gale, M. (2015). Soap & cosmetic labeling. Cinnabar Press.
Harper, S. (2014). The natural & handmade soap book. F&W Media International, Ltd.
Jones, J. (2018). 10 great reasons to switch to natural handmade soap. The drop. https://www.edensgarden.com/blogs/news/10-great-reasons-to-switch-to-natural-bar-soap
Tatallo, M. (2021). Botanical soaps. Quadrille.
US Department of Health & Human Services. (2021). Handwashing: Clean hands save lives. CDC. https://www.cdc.gov/handwashing/why-handwashing.html



