Fogged headlight in BMW - what is the reason and how to fix it?

I have a fogged up front right headlight. Will there be a chance to remove the fogging? The problem affected a BMW X3 xDrive model, but it happens in other models as well.

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BMW driver question

I have a fogged up front right headlight. Will there be a chance to remove the fogging ?

The problem concerned the BMW X3 xDrive model, but it happens in other models as well.

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BMW headlight | By Michael Sheehan (Headlights - 2014 BMW 335i xDrive GT)[CC BY 2.0], via Wikimedia Commons

Response from BM Cars service

Headlight fogging is an issue that affects many new BMW models.

There are very many different reasons for this effect. On new models equipped with xenon lights, the outer glass gasket kits are no longer available, and if the headlight is unsealed, the manufacturer recommends replacing it. Fogging can also be caused by a clogged vent valve or a crack in the lamp itself. Both faults are diagnosable only after the lamp is built from the vehicle.

We invite you to take advantage of our service.

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BMW X3 | By order_242 from Chile (BMW X3 Xdrive25i 2010)[CC BY-SA 2.0], via Wikimedia Commons
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Lamp in BMW 435i M Sport (F32) | © Yahya S. / Flickr / CC BY 2.0

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Lamp in BMW 320d Touring (F31) | © Tokumeigakarinoaoshima / Wikimedia Commons / CC BY-SA 4.0