Cosmetics are products that are applied directly to the skin and especially to the face to with the purpose beautifying it or change the original appearance to something that is more pleasing to the eye like make up. ‘Cosmetics are used in many different ways to help people take care of the exterior of their bodies. Cosmetics main goals are to change, the odours of the body, changing its appearance, to cleanse, top maintaining it in good condition, to perfume it or to protect it,’ (www.tga.gov.au 2011). There is some mistaken belief when it comes to classifying if a cosmetic is a cosmetic or a therapeutic. When cosmetics are to use to beautify therapeutics are used to change the physiological composition of the skin or to “relief of”. A very good example of this is deodorant and anti-perspiring deodorant. Normal deodorant alters the smell of ones under-arms; this only altering what is on the exterior of the skin. ‘While anti-perspiring deodorant alters the physiological properties of the skin by blocking the sweat pores on the epidermis so sweat is not released’ (www.care2.com 1999). The main purpose of this experiment is to test whether home-made bath bombs can be created at try to match or out match the commercial bath bomb. There are a number of ways that the bath bombs can be tested. The tests include how acidic the water becomes when the bath bomb is dissolved and the rate of how fast the bath bomb dissolves. Bath bombs are used to scent the water and soothe the skin and the ingredients that are included will assist that objective are almond oil and lavender oil. The oils are to attempt to soften and scent the epidermis (outside layer of the skin) temporarily. The bath bombs “fizzes” when it comes to contact with the water. A specific chemical reaction takes place and this is called an acid-base reaction. ‘This is where the acid (citric acid) and the Base (sodium bicarbonate) are applied to the water and this causes carbon dioxide to form and this is the fizz that is seen’ (sedonaaromatherapie.com). The bath bomb will also be tested in Hot and Cold water and there will be various concentrations of the included ingredients. This will provide quantitative data for the data tables and discussion. Then the hypothesis can be proven or revoked.
Aim
The purpose of this experiment is to investigate the differences between the basic ‘home-made’ bath bombs to the high quality commercial bath bomb in various tests.
Hypothesis
It is hypothesized that the home made bath bombs will not match the commercial as the bath bomb that are being made in the science lab during class time will be very basic. Therefore the commercial bath bomb will perform better in most if not all tests.
Materials list
• 1 1/2 cups bicarbonate of soda • 1/2 cup citric acid •
