There are at least 4 methods that 100% help to avoid calluses even after wearing new shoes.
Moreover, the problem is relevant not only for cheap models or leatherette products.
To prevent the appearance of calluses, there are special sticks. In appearance, they resemble mini-deodorants. Before leaving the house, it is enough to rub the stick on the areas where shoes usually rub.
You can replace the stick with a regular solid deodorant or regular hygienic lipstick.
The product works on the same principle as a deodorant. But the soap is rubbed on the areas of the shoe that cause discomfort while walking.
The product softens the leather surface perfectly. It is enough to wet a cotton pad and apply it to the area that rubs the foot. Vinegar is safe for the skin, but you should be careful with leatherette.
One of the reasons for the appearance of calluses can be sweaty feet. The problem is eliminated with talc or soda. The inner surface of the shoe or feet is treated, and the excess is removed.