When someone tells you, "Press-on nails ruined my natural nails," what they actually mean is, "I ripped my press-on nails off with my bare hands."
Cosmetic cyanoacrylate nail glue forms an ultra-strong cross-linked chemical bond with the superficial onychocytes of your dorsal keratin plate. The adhesive tensile strength of cured cyanoacrylate exceeds 1,500 pounds per square inch—significantly higher than the natural lipid bond holding your microscopic nail layers together.
When you slip a fingernail or metal tool beneath a press-on edge and pry upward, the glue does not yield. Instead, it acts as an anchor, tearing away 20 to 40 layers of your natural dorsal keratin in jagged, paper-thin sheets. The result is thin, aching, sensitive nail beds covered in white delamination scars that take four to six months to grow out completely.