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serum
In a medical context, the term evokes a sense of clinical precision and diagnostic purity. It refers to the essence of the blood stripped of its cellular components, serving as a window into the body's internal chemical state. In the beauty industry, the word suggests potency and luxury. It implies a high concentration of active molecules designed for targeted delivery, distinguishing it from lighter lotions or heavier creams through its thin, fast-absorbing consistency.
Countable when referring to a specific commercial product (a serum). Uncountable when referring to the biological fluid in a clinical sample.
意味
The clear liquid part of blood or lymph that remains after clotting.
"The lab technician analyzed the patient's serum for antibodies."
A concentrated liquid containing active ingredients used for medical or cosmetic treatment.
"She applied a vitamin C serum to her face every morning."