Method of applying artificial lash extensions

What is this patent about?

’855 is related to the field of artificial eyelash enhancements and, more specifically, to the construction and application of multi-cluster lash extensions designed for attachment to the underside of natural lashes.

The underlying idea behind ’855 is to bridge the gap between time-consuming individual extensions and unnatural-looking strip lashes by using heat-fused lash fusions. By melting the roots of multiple hair clusters into a single, ultra-thin base, the invention creates a wide segment of lashes that maintains a negligible weight and a low profile. This construction allows for a seamless blend with the natural lash line while providing enough surface area to be applied in bulk segments rather than one hair at a time.

The claims of ’855 focus on a method of applying these extensions specifically to the underside of the natural eyelashes. The process involves taking a set of lash extensions—where each extension is formed by heat-connecting multiple clusters of at least two hairs to a common base—and using an adhesive to secure that base to the bottom surface of the natural lash fibers. This orientation hides the attachment point behind the natural lashes, creating a more realistic appearance than traditional top-down applications.

In practice, the invention utilizes a hot melt process to fuse the artificial hairs, which results in a base thickness of only 0.05 to 0.15 mm. This is significantly thinner than conventional clusters that rely on bulky knots or support threads. Because the base is so flat and lightweight, it can be positioned along the upper tightline—the area between the lash line and the waterline—without causing the discomfort or drooping typically associated with heavy artificial fringe.

This approach differentiates itself from the prior art by moving the bond site away from the eyelid skin and onto the hair itself. Unlike strip lashes that adhere to the dermis and often lift at the corners, these fusions are designed to be grasped as a set and bonded to the proximal end portion of the natural hair. This mechanical shift ensures that the extensions move naturally with the eye's anatomy, providing a professional-grade aesthetic through a simplified application technique that does not require the hour-long precision of single-fiber bonding.