If the sandals are new, use petroleum jelly as part of a 3-day break-in plan. On day 1, wear them indoors for 20 to 30 minutes. On day 2, go 45 to 60 minutes. On day 3, try a short outdoor walk of 15 to 20 minutes. Apply the jelly before each wear to reduce the early abrasion that tends to happen while straps are still stiff.
You can also soften problem areas in leather sandals by gently flexing the strap by hand for 1 to 2 minutes or wearing them with thin socks around the house for a brief period. I do not recommend soaking shoes or using harsh stretch sprays on delicate materials unless the manufacturer specifically says it is safe.
10. How to keep your toes from getting slippery
The main mistake people make is overapplying. Too much petroleum jelly can make the foot shift, which creates a different kind of friction. Use the smallest amount that leaves a soft sheen. After applying, wait 1 to 2 minutes, then lightly blot with a tissue if the skin feels overly slick.
Another helpful trick is to keep the sole of the foot mostly product-free. Focus on the tops, sides, and between-toe strap areas. That way you reduce rubbing where it hurts without making the bottom of your foot slide over the sandal footbed.
11. What to do after you get home
Once the sandals come off, wash your feet with gentle soap and lukewarm water to remove sweat, grit, and leftover jelly. Then inspect the irritated areas under good light. If you see only mild redness, let the skin air out for 20 to 30 minutes, then apply a small amount again overnight if the area feels dry or tight.
If there is a blister, keep it clean and protected. If there is peeling, do not pick at it. I like to switch to soft cotton socks and a roomy slipper for the evening because even household friction from hard floors can keep sore toes irritated longer than necessary.
12. How much this solution costs compared with other fixes
