YumCars Trim Serum 50mL

Trim Serum is a dedicated coating for exterior plastic and trim, designed to restore depth, improve water behaviour and help protect trim from fading, UV exposure and environmental contamination. It is ideal for textured plastics, exterior mouldings and faded trim that needs a deeper, cleaner look.

Features & Benefits

• Dedicated exterior trim coating
• Restores a deeper, richer appearance to plastic trim
• Helps protect against UV exposure and fading
• Improves water repellence and cleaning ease
• Suitable for textured exterior plastics and mouldings
• Longer lasting alternative to basic dressings

Trim Serum is designed for exterior plastics and trim that need more than a temporary dressing. While a dressing can improve appearance quickly, a trim coating is designed to bond more effectively to the surface and provide longer-lasting protection against weathering, UV exposure and everyday contamination.

Exterior trims are constantly exposed to sun, rain, road grime and wash chemicals. Over time they can fade, dry out or lose depth. Trim Serum helps restore a darker, cleaner look while adding a protective layer that makes future washing and maintenance easier.

It is best used on clean, dry trim that has been thoroughly prepared. Any previous greasy dressings or residues should be removed before application so the coating can bond correctly.

For maintenance, clean exterior trim with Yum Wash during regular washing and avoid harsh degreasers unless you are preparing the surface for reapplication. Yum Dress V2 can be used separately where a dressing-style finish is preferred for tyres, engine bays or interior plastics.

Recommended YumCars pairings:

Yum Dress
Yum Wash
Yum Panel Wipe
PPF Serum

Pro Tip

On faded trim, two very thin applications are usually better than one heavy application. Heavy product can sit unevenly in textured plastic, while thin coats level more cleanly and look more natural.

Frequently Asked Questions

How is Trim Serum different from Yum Dress V2?
Trim Serum is a longer-lasting coating for exterior trim, while Yum Dress V2 is a versatile water-based dressing and moisturiser for tyres, trim, engine bays and interiors.

Should I clean old dressing off first?
Yes. Old greasy residue can reduce bonding and cause uneven results.

1. Clean the trim thoroughly and remove old dressings, oils and grime.


2. Make sure the surface is completely dry before application. Textured trim can hold moisture, so allow extra drying time.


3. Mask surrounding paint if needed, especially around porous or heavily textured areas.


4. Apply Trim Serum thinly and evenly using a suitable applicator.


5. Allow the product to absorb and level any excess with a clean microfibre towel.


6. Inspect for uneven patches and apply a second light layer only if required.


7. Keep the surface dry during the initial curing period.