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Did you just buy new barefoot shoes from Bohempia and notice light, whitish streaks on the sole or its rim? Before you panic – this isn't a defect, nor is it mold. It’s a natural characteristic of natural rubber, and it even has its own name: rubber blooming. Let’s look at what exactly is happening and how to easily fix it.
What is natural rubber and why do we use it?
Natural rubber comes from Hevea brasiliensis trees and is one of the most sustainable materials for making soles. It is flexible, durable, non-slip, and unlike synthetic alternatives, it is biodegradable. That’s exactly why this material won us over, and we use it for the soles of our barefoot shoes.
Want to learn more about the materials we use to make our barefoot shoes? Find everything right here!
What is rubber blooming and why does it happen?
Blooming is a phenomenon where substances naturally contained in rubber – such as waxes or compounding ingredients – migrate to the surface of the material, creating a whitish, slightly matte coating. This happens mainly due to heat, UV light, and moisture, which speed up the process.
Most often, blooming appears on the rim of the sole – right where the rubber meets the upper of the shoe. This is purely a surface matter that doesn't affect the functionality or lifespan of the sole in any way. The shoe grips just as well, is just as durable, and just as comfortable. It simply looks a little different.
How to remove white spots caused by rubber blooming?
If the whitish spots on your shoes bother you, the solution is simple:
- 👉 Take a soft cloth or a cotton pad.
- 👉 Apply isopropyl alcohol (rubbing alcohol) — available at any pharmacy — or olive oil, which we've personally tested. According to available sources, any neutral plant-based oil should work just as well (coconut, sunflower…).
- 👉 Rub the affected area until the spots disappear.
- 👉 Let it dry.
And the spots will simply disappear. They might reappear over time – that’s completely normal. Just repeat the process.
Looking for accessories to care for your barefoot shoes, like a cleaning kit, shoe odor spray, or natural waterproofing? Find them all in this category!
In conclusion: Nothing to worry about
Natural rubber is a living material with its own specific characteristics. Rubber blooming is a natural process that in no way compromises the quality or functionality of your shoes. Take it as a little proof that your soles are truly made of natural material.
SOURCES:
- Echo Supply – Rubber Bloom: What Causes It and How To Prevent It
- Boyd Corp – Understanding Rubber Bloom – boydcorp.com
- RubberAndSeal – Why Does Rubber Turn White (Bloom)? – rubberandseal.com