From which area of the nails does an acrylic overlay derive its strength?

An acrylic overlay derives its strength primarily from the apex of the nail. The apex is the highest point of the nail enhancement and is essential for providing structural integrity and support. This elevated area helps to distribute pressure evenly across the nail surface, which reduces the risk of cracking or breaking during daily wear.

In nail enhancements, particularly those involving acrylics, proper placement and shaping of the apex is crucial for both aesthetic appeal and functional durability. A well-defined apex contributes to the overall strength and longevity of the enhancement, allowing for a more durable finish that can withstand various stresses.

Understanding the importance of the apex also highlights that other parts of the nail structure, such as the sidewall, stress area, and underside, play supporting roles but do not provide the same level of strength as the apex does. The sidewall contributes to the shape and containment of the nail enhancement, the stress area is critical for flexibility and comfort, while the underside primarily helps with adhesion and surface area. However, it is the apex that is fundamentally pivotal in terms of strength and support for the overall structure of an acrylic overlay.