The experts consulted for this story do not necessarily endorse the products ahead unless otherwise noted.

Just a few months from now, we’ll finally be in sandal weather, whether your toes are ready or not. But if a particularly persistent and unsightly toenail fungus is giving you some trepidation, here is one powerful $19 treatment that reviewers call a “surprisingly effective solution,” which worked when nothing else would. And dermatologists explain why.

Easily accessible at Amazon, The Foot Cure toenail fungus treatment promises to address fungus, but also nail psoriasis and overall nail damage. It’s a naturally powered solution that many have found successfully restores thickened, discolored and flaking nail beds.

It’s provided hope when “I didn’t believe there was for decades,” according to one reviewer. “I’ve waited years to find something this effective,” says another, while one user swears they’re “fungus free in less than 2 weeks!”

If you’re experiencing similar feelings of despair, board-certified dermatologist and skin care brand founder, Dr. Brooke Jeffy, said that nail fungus is a common and especially stubborn condition to treat because nails are hard and not porous, making it difficult for topical medications to penetrate the nail to treat the infection.