The terms “3D lashes” and “4D lashes” are often used in the context of eyelash extensions, which are a beauty treatment used to enhance the length, amount of thickness, and curl of natural eyelashes. These terms refer to different techniques and styles of applying lash extensions to create a more voluminous and dramatic look. For more details, please visit - https://iconicbrownlash.com.au/what-exactly-is-the-difference-between-3d-and-4d-lashes/