Which condition are you describing?
A fine film
Light mist can appear after changes in surrounding conditions. Its behaviour over time matters, not just one photograph.
Droplets or water collecting below
Visible drops and pooled water are not the same description as a thin haze. Say whether it recurs and affects one or both sides.
Cloudy plastic on the outside
A yellow or dull outer lens is covered by our restoration guide. External deterioration and internal moisture can also occur together.
Why mist can appear without a cracked lens
HELLA and Mitsubishi technical references explain temperature changes, humidity and ventilation in lamps. Brief fine mist alone therefore does not diagnose a failed seal. Distinguish a temporary appearance from accumulating water and include information about lighting function. A photograph cannot reliably establish the complete condition of a headlight.
There is no universal number of minutes after which every lamp must be dry. Construction and conditions matter, and the particular manufacturer's instructions take priority. Do not take another test journey merely to observe it. Known behaviour during ordinary use and photographs taken while safely parked are sufficient for the initial conversation.
When appearance is not the only concern
Report drops, water collecting below, repeated loss of lighting, visible damage or recent work. Those observations change the assessment needed. Moisture can affect internal parts and connections, so a dry outside surface is not enough to close the issue. Equally, mist alone does not prove that the entire assembly requires replacement.
If a light fails or cannot provide necessary visibility, simply waiting for it to dry is not an adequate plan. Agree an appropriate response from a safe location. Electrical smell, smoke or collision damage makes safety the priority. Neither this guide nor a photograph confirms fitness for another journey or the outcome of a Czech STK inspection.
Why polish, sealant and hot air are not universal repairs
Restoring a plastic outer lens concerns its surface; it does not automatically correct internal moisture or an electrical fault. Our separate restoration page explains the service's limits. Do not order polishing as an established cure for water inside before its cause has been assessed.
Do not drill drainage holes, block ventilation or open a sealed lamp using a generic video. Applying a heat gun at home can cause further damage. A professional procedure depends on the design and findings. Confirm whether the particular lamp can be assessed here and whether specialist work is needed; rebuilding or resealing is not automatically a promised service.
Prepare useful evidence and compare the proposed solution
Send the model, year and affected side, with an overall view and a close view of the mist or water. Take them only while safely parked, without dismantling and without unrelated personal information in view. Include when you first noticed it, whether it recurs and any preceding lamp work. Separate your observations from findings in another workshop or an inspection report.
The proposal should explain whether the assessment concerns temporary condensation, an identified leak, damage or functional failure. Authorise any parts, labour and follow-up operations separately. A lens-restoration price is not automatically the price of addressing moisture inside. Scope and repair availability must be confirmed for the individual vehicle.
Your checklist before contacting the workshop
- Model, year and left, right or both headlights.
- Fine film, droplets or pooled water and the known timeline.
- Photographs taken while safely parked and any exact fault message.
- Rain, washing, damage or recent repair before the issue appeared.
Use existing observations. Email only relevant records taken while safely parked; the form does not accept attachments.
Frequently asked questions
Do I need a new headlight at the first sign of mist?
Not automatically. First assess its nature, persistence and function against the particular design.
Will polishing fix water inside?
Polishing the outer lens alone does not address internal moisture, a leak or an electrical fault.
Should I drill a hole to let it drain?
Do not modify the housing yourself. That can compromise its protection and make appropriate repair more difficult.
Agree the next step
Tell Autoservis 1 in Červený Újezd what is visible inside the lamp and whether it works. At Unhošťská 92, we first agree assessment appropriate for the particular vehicle. We are near Unhošť, Hostivice, Kladno and Prague-West; photographs do not replace inspection or confirm a price.
Ask about a headlight assessmentSources and limits
Published 23 October 2026. Sources explain general principles, not a diagnosis of your vehicle. Follow the instructions for your particular car.