Waterproofing shoes can be beneficial in certain situations, such as hiking in wet conditions or working in a rainy environment. However, for everyday use, it may not be necessary for everyone. It ultimately depends on individual needs and preferences. Some people may find waterproofing to be a valuable feature, while others may not feel it is essential for their footwear. **

Leather shoes darken after waterproofing because the waterproofing product penetrates the leather and changes its appearance. The product creates a protective barrier on the surface of the leather, which can alter its color and texture. Additionally, the process of applying the waterproofing product can also cause the leather to darken as it absorbs the product. This is a natural reaction and should be expected when waterproofing leather shoes. **

The duration of waterproofing on shoes can vary depending on factors such as the quality of the waterproofing treatment, the frequency of use, and the conditions the shoes are exposed to. Generally, waterproofing treatments can last anywhere from a few weeks to several months. It is recommended to reapply waterproofing treatments periodically, especially after heavy use or exposure to wet conditions, to maintain the effectiveness of the waterproofing. **

Leather shoes can become cracked after waterproofing because the process of waterproofing can sometimes dry out the natural oils in the leather, making it more prone to cracking. Additionally, some waterproofing products contain chemicals that can be harsh on the leather, leading to damage and cracking over time. It is important to use a high-quality leather conditioner in addition to waterproofing to keep the leather supple and prevent cracking. **

Yes, you can apply waterproofing sprays on Nike TN1 shoes to help protect them from water damage. It is important to follow the instructions on the waterproofing spray and test it on a small, inconspicuous area of the shoes first to ensure it does not cause any discoloration or damage. Additionally, it is recommended to reapply the waterproofing spray periodically, especially after cleaning the shoes. **

Shoes typically need to stand for at least 24 hours after waterproofing to ensure that the product has fully dried and bonded to the material. This waiting period allows the waterproofing agent to penetrate the fabric or leather and create a protective barrier against moisture. It is important to follow the manufacturer's instructions for the specific waterproofing product being used to achieve the best results. **

If shoes have blue stains after waterproofing them, it is possible that the waterproofing product used contained a dye or colorant that transferred onto the shoes. To address this issue, it is important to carefully read the instructions on the waterproofing product and ensure that it is suitable for the material of the shoes. If the stains persist, it may be necessary to try a different waterproofing product or seek professional help to remove the stains. **

If shoes have blue stains after waterproofing, it is possible that the waterproofing product used contained a dye that transferred onto the shoes. To address this issue, you can try gently wiping the stained areas with a damp cloth to see if the stains can be removed. If the stains persist, it may be necessary to seek professional help or use a stain remover specifically designed for the type of material your shoes are made of. It is also a good idea to carefully read the instructions on the waterproofing product before using it to prevent similar issues in the future. **