1.Newborn babies are given injections of vitamin K at birth,since oral administration us difficult and several weeks are required before colonization of the gut occurs.
2.Bruises heal on their own without medical attention,thus it is hard to know if cream application improved an endogenous body process.
3.However,since vitamin K is required for blood clotting and removal of a hematoma requires lysis of a blood clot,there is no physiologic basis for the efficacy of these products.
It is also difficult to understand how a topically applied vitamin could remove structures within the skin,such as those cosmetically undesirable tiny blood vessels.
- 1 0 年前最佳解答
3. 去除血腫必須要先消除血塊,而消除血塊需要維他命K, 所以目前為止在生理基礎上沒有較有效的產品.