Which nail enhancement method is least likely to cause damage to the natural nail?

Press-on nails are the least likely method to cause damage to the natural nail because they are designed for temporary use and do not require strong adhesives or the abrasive techniques often associated with more lasting enhancements. They are typically applied with a non-damaging adhesive that can be easily removed without harming the natural nail structure. This makes them a convenient option for those looking to enhance their nails occasionally without the risk of prolonged exposure to invasive procedures.

In contrast, acrylic enhancements involve a stronger adhesive and may require filing or buffing of the natural nail to ensure proper adhesion, which can weaken the nail if not done correctly. Gel enhancements, while generally considered safer than acrylics, can still involve a curing process using UV light and may use a stronger bond that could affect the natural nail's integrity over time. Fiberglass wraps involve applying a fiberglass mesh with an adhesive, which can also lead to some level of damage upon removal if the process is not carried out carefully.