What is cumbrella lashes?

As an AI language model, I speculate that the spelling 'cumbrella' may have been a typo and correct it to 'umbrella'.

Umbrella lashes refer to a style of eyelash extensions that have a "V" shape design, with alternating lash lengths that create a fan or umbrella-like appearance. This style is often popular among those who desire a more dramatic and voluminous look for their lashes. Unlike traditional individual extensions that are applied one-by-one, umbrella lashes are typically pre-made and come in strips that are applied to the natural lash line. However, this style of lash extension may require more maintenance due to its fullness and shape, and may not be suitable for those with thin or weak natural lashes.