Leather shoes are a classic, durable choice in footwear, but their longevity is closely tied to proper care and storage. When exposed to harsh conditions, such as the intense heat inside a car, leather can suffer significant damage. Let’s explore how a hot car impacts leather shoes and what steps can be taken to mitigate these effects.
Effects of Heat on Leather Shoes
Leather is sensitive to temperature extremes, especially heat. Inside a parked car, temperatures can easily exceed 120°F (49°C) in direct sunlight, creating an environment that is far from ideal for leather products. The heat causes the natural oils in leather to evaporate, which leads to several issues:
- Drying and Cracking: The most immediate effect of heat on leather is the evaporation of oils. Leather relies on these oils to remain supple. Once these oils dry out, the leather becomes brittle, leading to cracks, wrinkles, and damage that is difficult to repair.
- Shrinking and Warping: High temperatures can cause leather shoes to shrink, warp, or lose their original shape. This is particularly true for shoes that aren’t stored with proper supports like shoe trees. Leather shrinks when exposed to high heat, which can lead to discomfort when worn and permanent shape deformation.
- Discoloration and Fading: Prolonged exposure to heat, especially in combination with UV rays from direct sunlight, can cause leather to fade or change color. This not only affects the aesthetic appeal of the shoes but also weakens the leather fibers over time, increasing the chances of tearing.
Impact of Sunlight on Leather
Sunlight is another factor that exacerbates the damage caused by heat. UV rays accelerate the breakdown of the leather’s surface, leading to discoloration and a dried-out appearance. Over time, the leather can become stiff and cracked, especially in areas that are frequently flexed, like the toes and heels of shoes.
In extreme cases, sunlight can even cause the leather to become overly brittle, which weakens its structure.
Moisture and Mold Concerns
While heat dries out leather, the opposite issue—moisture buildup—can also occur inside a car. Cars often experience fluctuations in temperature, and the combination of heat and humidity can lead to condensation. If moisture becomes trapped inside the shoes, it can promote the growth of mold and mildew, which can cause irreversible damage to leather. Mold not only stains leather but can weaken its structure, leading to a breakdown in the fibers.
How to Restore Leather Shoes Damaged by Heat
If your leather shoes have already suffered heat damage, there are a few steps you can take to try and repair them. While prevention is the best approach, minor damage can sometimes be addressed with proper care:
- Rehydrate with Leather Conditioner: The first step in repairing heat-damaged leather is to apply a leather conditioner to restore moisture. Since heat causes the leather to dry out and crack, a conditioner replenishes the oils that have evaporated. Be sure to choose a conditioner that is designed for leather shoes. Apply a generous amount, allowing the leather to absorb it fully.
- Use Leather Cream for Deeper Damage: If the heat damage has resulted in more significant cracks or dryness, using a leather cream might help. Leather creams are designed to provide deeper nourishment than regular conditioners. They also restore color and reduce the appearance of discoloration caused by heat exposure. Apply the cream in circular motions and leave it to dry completely before using the shoes.
- Professional Restoration: In cases of severe damage—such as deep cracks, extensive fading, or shrinkage—it may be necessary to seek professional help. A professional leather repair specialist can use more advanced techniques, such as recoloring, stitching, or applying a leather patch to restore the shoes.
Can Leather Shoes Withstand Any Heat?
While it’s clear that leather is sensitive to heat, not all types of leather react the same way. For instance, different finishes and treatments can make certain types of leather more heat-resistant:
- Aniline and Waxed/Oiled Leather: These types of leather are particularly sensitive to heat and sunlight. Aniline leather, which is dyed without any protective coating, is especially prone to fading, drying, and cracking. Oiled leathers might handle heat better, but they still require regular conditioning to remain supple.
- Automotive Leather: Leather used in car interiors is often treated to withstand higher temperatures and constant sunlight. While this type of leather is more durable than that used in shoes, even it requires regular conditioning to prevent deterioration.
For leather shoes, it’s always safer to avoid prolonged exposure to heat, regardless of the leather type.
