https://www.selleckchem.com/products/z-lehd-fmk-s7313.html The present review article focuses on highlighting the main technologies used as tools that improve the delivery of transdermal biomolecules, addressing them from the point of view of research in the development of transdermal systems that use physical and chemical permeation enhancers and nanocarrier systems or a combination of them. Transdermal drug delivery systems have increased in importance since the late 1970s when their use was approved by the Food and Drug Administration (FDA). They appeared to be an alternative resource for the administration of many potent drugs. The first transdermal drug delivery system used for biomolecules was for the treatment of hormonal disorders. Biomolecules have been used primarily in many treatments for cancer and diabetes, vaccines, hormonal disorders, and contraception. The latest technologies that have used such transdermal biomolecule transporters include electrical methods (physical penetration enhancers), some chemical penetration enhancers and nanocarriers. All of them allow the maintenance of the physical and chemical properties of the main proteins and peptides through these clinical treatments, allowing their efficient storage, transport, and release and ensuring the achievement of their target and better results in the treatment of many diseases. COVID-19 has severely affected the world since December 2020. Because of its sudden onset and highly contagious nature, the world has responded in a "crisis management" manner. With effective vaccines almost available, it is appropriate at this time to have some reflections about COVID-19 in relation to the quality of life issues. In this paper, we highlight twelve issues for reflection, which can help us better prepared for future pandemics. These include digital divide, health inequality, gender inequality, economic disadvantage, family well-being, impact on holistic well-being, economic development versus saving l