แปล
a. This may be easiest to do using a measuring tablespoon and pieces of plastic
wrap to scoop the moisturizer out of the measuring tablespoon. (Either put the
plastic wrap around your fingers to scoop out the moisturizer or you could try
lining the measuring tablespoon with plastic wrap.) Use a fresh piece of plastic
wrap for each moisturizer, and clean the tablespoon between moisturizers, so
you do not contaminate your samples