Press-on nails come in different thicknesses depending on the design and technique used.

Thin styles are often minimalistic or feature flat designs like solid colors or fine-line art. Sometimes, they also use newer techniques or lightweight gel formulas that allow for a slimmer finish without compromising the look.
Thicker press-ons, on the other hand, involve more detailed designs—such as 3D elements, layered gel art, or textured finishes. These styles require multiple layers of builder gel or top coat to create dimension and secure embellishments, which naturally results in a thicker nail.
So, the thickness isn’t about quality—it’s all about the design approach and artistic intention.