Soap
PHẦN 3: XÀ PHÒNG
Not so long ago, a sliver of soap made from the leftover drippings of a month of meals was a treasure. It was highly caustic, and in great demand. These lard bars were a blessing to those who lived during the 17th and 18th centuries, but they were crude in comparison to what we have …
PHẦN 2: XÀ PHÒNG
Not so long ago, a sliver of soap made from the leftover drippings of a month of meals was a treasure. It was highly caustic, and in great demand. These lard bars were a blessing to those who lived during the 17th and 18th centuries, but they were crude in comparison to what we have …
PHẦN 1: XÀ PHÒNG
Not so long ago, a sliver of soap made from the leftover drippings of a month of meals was a treasure. It was highly caustic, and in great demand. These lard bars were a blessing to those who lived during the 17th and 18th centuries, but they were crude in comparison to what we have …
QUÁ TRÌNH XÀ PHÒNG HÓA
Soap can be made from fats and oils, sodium hydroxide, and water. Soapmaking can be as simple as dissolving sodium hydroxide in water, melting fats together, adding the sodium hydroxide solution (lye) to the melted fats, and stirring. It can get more complicated, but it needn’t. This book starts at the beginning, assuming the reader …