Does eye black lengthen eyelashes

It seems you might have some confusion. "Eye black" usually doesn't refer to a product for lengthening eyelashes.

Eyelash Growth Serums: These products often contain ingredients like peptides, biotin, and vitamins that are believed to nourish the eyelash follicles and promote growth. For example, the Revitalash Advanced Eyelash Conditioner is a well-known product in this category.

Mascara: While it doesn't actually make eyelashes longer in a biological sense, mascara can create the illusion of longer lashes. There are many volumizing and lengthening mascaras on the market, such as the Maybelline Lash Sensational Mascara, which uses special brush designs and formulas to coat and extend the lashes.