Do you know it, a week spent wonderfully in the sun and walking barefoot over endless beaches? Then it might just be that you suddenly developed a thick layer of callus. With cracks. Brrr. Not very pretty, but sometimes also very painful. I had it and reached for the Pro Spa Advanced Softening Gel from OPI. If it doesn't help, it doesn't hurt, I thought. But what was the case? Within half a day the pain was gone and my foot already felt so much softer. Just one more day of applying and I can go back into the sun, you know. Bring it on.