LASH Theory


Bespoke eyelash extensions and lash lift services.

Scientist | Lash Artist | Educator

Hello there! I'm Kai Bella, CEO of Lash Theory Studio, located in the heart of coastal La Jolla San Diego in sunny Southern California.  Lash Theory is a place for all things bespoke luxury lash extensions related in La Jolla, CA.  I’m a successful clinical scientist and infection control practitioner with a passion for all things related to science and beauty. 

As a contributing member of the American Eyelash Association and the National Association of Lash Artists, I am dedicated to the vision of cultivating the growth of the Eyelash Extension Industry through advocacy, education, legislation, safety, and best practices.  At Lash Theory, your lashes and education are in the best hands.  

As a professional, I am always on the lookout for the best quality lash products from the finest manufacturers around the world.   I only use top-quality lashes and adhesives that are both latex and formaldehyde-free.  Whether you’re a guest looking for beautiful and healthy eyelash extensions services or a beauty professional looking for unparalleled eyelash extension education and mentoring with Lash Theory, you choose a company that cares about its customers and students while demanding the highest standards in its business.   You won't find our safety and quality matched elsewhere.  


Our mission is to provide the highest quality and most innovative eyelash extension services and education in the industry.  We are committed to both the satisfaction of each Lash Theory Studio guest and the success of every Lash Theory Academy student by providing a memorable experience through unparalleled customer service and world-class education.


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