Abstract
In designing cosmetics and personal care products, the evolution of nanoemulsions has catalyzed groundbreaking advancements in enhancing the efficiency and delivery of actives aimed at rejuvenating and fortifying skin health. The ability of nanoemulsions to encapsulate both hydrophilic and hydrophobic actives while navigating biological barriers ensures their precise and targeted release, enhancing therapeutic efficacy while mitigating adverse effects. This chapter aims to elucidate the pivotal role of structural stability on the integrity, shelf-life, and functionality of these formulations, thereby driving innovation and progress in the formulation and design of highly effective cosmetics. By exploring the fundamental principles governing stability within these formulations, this chapter seeks to elucidate the critical factors shaping their design and longevity, ultimately paving the way for innovative advancements in the field.