It does not only let a woman feel or look better but also encourages her study basic chemistry and oils properties and involves a great deal of experimenting with natural ingredients and design. (russianwomen.club)
This is a great thing to look at when you are teaching basic chemistry, to show that molecules move faster when they are at a higher temperature. (homeschool-guide.com)
If you use basic chemistry to work out, you will know that this system is not as elegant as it seems. (blog.chembark.com)