Session Date
Lesson Topic
chemistry of lipstick
Lesson Outline
Starting with a brief discussion of some of the uses for lipstick, we then began a discussion of the ingredients which are found in lipstick. The chemistry of beeswax was discussed, composed of fatty acids and long chain alcohols. The structure of long chain alcohols was sketched and explained, as well as fatty acids. The melting point and use as a barrier was discussed, and the superiority to petroleum jelly noted. Oils were discussed for their use in lipstick as a moisturizer, specifically castor oil. Its chemical make-up was also discussed as a lipid. Iron oxides used as a pigment, its formula, and titanium dioxides used as a thickener and sunscreen was listed.The different preservatives which can be found In lipsticks, such as propylparaben was mentioned as a estrogen mimic.
Session Minutes
120
Minutes Student Attended
120
Lesson Comments
Sam was very active in the classwork, contributing as we went along
Session Hours
2.00
Hours Attended
2.00
Entry Status
Review Status
Student Name(s)
Subject