Water ingress of a headlight may be caused by poor sealing or aging of sealing components. 

The solutions to water ingress of a headlight are listed below:

Check the sealing condition of the lamp shade: First check whether the lamp shade of the headlight is well sealed, whether there is any crack or deformation, and whether the sealing rubber ring is intact. If any problem is discovered, the sealing rubber ring can be replaced.

Determine the water ingress point: If there is only water mist outside the headlight, you can try removing the headlight and evaporate the water. If water has entered the interior of the headlight, it is necessary to thoroughly clean and dry the interior of the headlight.

Re-seal the headlight: If a headlight has serious water ingress problems, it is recommended that the inner and outer surfaces of the headlight should be cleaned thoroughly and rea-sealed. Remember to use specialized sealant or sealing strip to achieve good sealing effect of the headlight.

Prevent water ingress again: Check the sealing condition of the headlight on a regular basis, especially the headlight shade and sealing rubber ring, so as to ensure good sealing. After heavy rain or car washing, check whether there is water mist inside the headlight in time.

Core issues solved by DPA headlights: lamp shade yellowing and water ingress.

Advantages of DPA headlights:

1. Lamp shade: The DPA lamp shade is made of imported Bayer PC material and based on a dual-color molding process. The surface is coated with imported UV hardening material, which features excellent resistance to UV and oxidation, preventing any yellowing in the first 2 years of use, leading to good light transmittance, and contributing to safe driving.

2. Lamp shell: The lamp shell is made of original PP material that is not easily oxidized and not fragile.

3. Lamp bowl: The lamp bowl is made of new material BMC characterized by high rigidity and strength, good forming shrinkage ability, and high dimensional accuracy. It effectively ensures the stability of light beams.

4. Lamp bulb: The light bulb harness of DPA headlight is an original product with more stable quality, safter operation, and longer service life.