A Clean Conscience: Formulating an All-Purpose Dental, Hair, and Body Cleansing Powder for the Homeless Population
CSEF · 2017 Materials Science (Junior Division Only) First Award
Overview
Objectives/Goals As the most requested hygiene items at homeless shelters are toothpaste, shampoo and body powder, I wanted to create an all-purpose tooth, hair and body cleansing powder that could be made from natural and inexpensive ingredients. Taking common ingredients found in tooth powder, body powder and dry shampoo, I set out to formulate a natural powdered product that would: (1) absorb sweat and oil, (2) clean teeth, (3) kill bacteria, and (4) have a pleasant taste/smell. Methods/Materials A variety of food-grade flours, clay, baking soda, salt, essential oils and stevia mixed in various proportions. Tested individual ingredients and combinations for absorptive and antibacterial effects, cleansing ability and taste/smell, using water, oil, sterile swabs, LB agar plates, tryptic soy agar plates, incubator (I built), sweaty shirt, toothbrushes. For absorbency, I used a dropper to add water/oil to each powder and observed when the water/oil was fully absorbed. For antibacterial properties, I contaminated my science classroom counter, cleaned it with (1) essential oils, and (2) my best formulas, then swabbed the cleaned areas and grew bacteria in agar plates. For tooth-cleansing, I brushed coffee-soaked eggs with toothbrushes dipped in each of the powders. Taste and smell were my own opinions. Results I created 13 formulas, most of which had absorbent and antibacterial properties, but did not taste well enough to function as a tooth cleanser, until I added stevia and significantly increased the amount of essential oils. Conclusions/Discussion I created three formulas that are able to absorb sweat and oil, clean teeth, kill bacteria, and have a pleasant taste/smell.
Summary statement
I created an all-purpose tooth, hair and body cleansing powder to assist the homeless population
Help received
I designed and performed the experiments myself, supervised by my mother and Caryn Asherson, my science teacher.
Awards (1)
Competition history
- CSEF 2017
Resources
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Source: California Science & Engineering Fair public projects