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The strong rays of Sun can be quite detrimental to clothes. Excessive Sunlight can bleach the color of the clothes and it is always advised to dry clothes in indirect Sunlight. But why does sunlight poof colors? Let’s find out.
Why do colors fade under the Sun?

Colors of clothes fade under the Sun because of a ray known as Ultraviolet (UV) radiation. UV radiation is a type of light that comes from the Sun, but we can’t see. It’s kind of like how dogs can hear sounds that humans can’t hear, UV radiation is a light that’s there, but we just can’t see it.
Now, when it lands on an object, this UV light starts to cause its colors to fade. The UV radiation can break down the chemical bonds between the atoms and molecules present in the dye that imparts the color. Over time, the UV light makes the colors lighter and lighter until they’re almost completely faded.
How does the Sun affect the intensity of colors?

So, what happens when things fade in the Sun? Well, the most noticeable change is that they start to lose their vibrant colors. If you’ve ever seen a bright red toy left out in the Sun, after a while, that toy might start to look pink, and then, after even more time in the Sun, it might start to look almost white.
But, it doesn’t just affect the color of objects, it also affects how the objects appear overall. For example, a brightly colored t-shirt might not look as appealing once the colors have faded. Or, a painting or a photograph might not have the same effect once the colors aren’t as bright and clear as they used to be.
How to prevent colors from fading under the Sun
The good news is that Sun fading can be prevented. One simple way to do this is to not leave objects in the Sun for too long. If there’s a particular toy or book that you don’t want to fade, try to keep it in a place where it won’t receive direct sunlight.
Another way to prevent Sun fading is by using certain products that offer protection against UV light. There are special films for windows and sprays for fabrics that can help block out UV rays and thus prevent Sun fading.
Lastly, there are certain materials that are more resistant to Sun fading. For example, some fabrics or paints are specially designed to withstand UV light. If you have something that’s going to be exposed to Sunlight quite a bit, it might be worth considering a material that is more resistant to sun fading. Silk and linen are especially prone to fading, while fibres like cotton and wool hold color for longer. Synthetic fabrics like nylon is also quite adept in holding the color.
Glossary
Sun Fading: This refers to the process where colors on objects fade or become lighter over time due to exposure to the Sun’s UV rays.
Ultraviolet (UV) Radiation: This is a type of light emitted by the Sun that isn’t visible to the human eye. It is this radiation that is largely responsible for causing Sun fading.
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