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Coating application after polishing

By removing the deteriorated hard coat, we were able to restore the polycarbonate's transparency. However, the polycarbonate remains exposed. In this state, it will scratch easily and begin to yellow in as little as two weeks.
Accordingly, there is a need to apply a new coating to replace the original hard coat. Candidates for this coating include the relatively easy to use hand-applied type and a painted type that is as similar as possible to the original hard coat. These effects of these coatings are drastic and unmistakable.

Types of coatings

Coatings for the vehicle body are the best known type of coating, but due to differences in composition and purpose, those coatings are not effective for headlights. The following properties are required for a headlight coating.
1. Weather resistance against ultraviolet rays
2. Surface hardness on par with the hard coat
3. Excellent resistance to contaminants and solvents

Methods for degreasing headlight lenses

After a headlight has been polished to remove the hard coat, it is necessary to apply a new protective coating to the polycarbonate. However, polycarbonate is weak to solvents, making it difficult to use the solvents conventionally used for degreasing. For that reason, even headlight manufacturers do not use organic solvents when applying the hard coat. Instead, they degrease parts by boiling them in hot water. The surface is particularly active after polishing, and it may have cracks too fine to be visible. For that reason, degreasing and cleaning with hot water and neutral detergent is recommended.

Zen-Xero Vario

Zen-Xero Vario
●Size: 100ml
●Main ingredient: Organic Polysilazane
●Application method: By hand
Ease of Use：☆☆☆☆☆
Durability：☆☆☆☆☆
Luster：☆☆☆☆☆

Now polycarbonate resin, rather than glass, is used for a material of headlights, and a various shapes of headlights exist. Headlights are important parts to determine the design of a vehicle. Deterioration and white turbidity of the hard coat layer of the surface of headlights are considered as a weak point of polycarbonate. It is common to polish and remove the hard coat with a water-resistant paper, buff the surface with compound to recover the transparency, and then apply a coating or paint on the surface to fix this problem. However, a product specially designed for headlights is needed to give the maximum effect to the material and conditions which are different from the painted surfaces. Zen-Xero Vario is formulated specially for headlights, and it prevents the deterioration of the coat itself and protects polycarbonate.

  • before
  • after

Weather Resistance Property Against Ultraviolet Rays

The hard coat originally on headlights uses the special kinds of paints which consider the effect of ultraviolet rays. Even so, it is impossible to avoid the effect completely, and it eventually gets deteriorated. When headlights are polished, ordinary auto body coatings do not have much resistance against ultraviolet rays, and polycarbonate gets deteriorated soon. However, this product forms a glass coat with strong siloxane bond which does not receive the excessive effect of ultraviolet rays and protects the polycarbonate surfaces for a long time.

Head Light Coating（thick type）

Ease of use: Average
Finish: ☆☆☆☆
Durability: ☆☆☆
This product uses a formula that is as close to inorganic as possible and free of unnecessary ingredients to maximize the thickness and hardness of the coating. While its ease of use is inferior to the other two products, the main ingredient, organosiloxane, provides a very strong coating. This high-level headlight coating is applied by hand.

Lens Reformer2

Lens Reformer2
●Set contents：Main agent ・hardener

1. Adheres to any kind of plastic without primer.
2. Improves the appearance of the vehicle by restoring the transparency and gloss of the headlights.
3. Maintains the appearance of the vehicle for a long period with excellent weather resistance.
4. These environmentally friendly products contain no substances subject to PRTR laws or the Ordinance on Prevention of Hazards Due to Specified Chemical Substances.

Repairable scratches

Unrepairable cracks

1. To completely remove scratches, sand the surface in stages, starting with P320 sand paper and ending with P2000 sand paper. This will completely remove the hard coat.

2. To remove sand paper marks, polish it in stages with a compound until the surface is completely transparent.

3. After degreasing, mask areas that do not require treatment and apply the primer. Let dry and then apply the final clear coat.

4. After forcibly drying the coating, remove any contaminants with sand paper, etc.

5. To remove sand paper marks, polish it in stages with a compound until the surface is completely transparent.

This takes approximately the same time as a normal coating process, but has been verified to remain effective for one to three years.

Headlights: Contents

≫ Headlight cleaning overview

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