YumCars Paint Serum IV 50mL

Paint Serum IV is a premium ceramic paint coating designed for up to 4 years of protection, combining durable hybrid bonding technology with a deep, glossy, highly repellent finish. It is the ideal middle step in the YumCars Paint Serum system for enthusiasts and professionals who want longer durability without losing usability.

Features & Benefits

• Up to 4 years of paint protection
• Silicon carbide infused topcoat for repellence and resistance
• Hybrid bonding technology for stronger durability
• Deep gloss, clarity and smoothness
• Designed for advanced enthusiasts and professionals
• Helps protect against stains, bugs, etching and environmental fallout

Paint Serum IV is designed for users who want a more serious long-term coating Paint Serum while still keeping application achievable for skilled enthusiasts and detailers. It delivers the gloss and smoothness the Paint Serum range is known for, but steps up durability and resistance for vehicles that need stronger long-term protection.

YumCars positions the Paint Serum range as a unique flexible ceramic protection system, engineered to partially absorb into the clear coat rather than behaving purely like a brittle layer sitting on top. Paint Serum IV builds on that philosophy with hybrid bonding technology and a silicon carbide infused topcoat for increased repellence and resistance.

This makes Paint Serum IV a strong choice for cars that are regularly driven, exposed to harsher conditions or owned by customers who want a more durable coating option without moving straight to the longest-life Paint Serum VI.

Correct preparation is critical. The paint should be fully washed, chemically decontaminated, mechanically decontaminated, polished if required and wiped down with Yum Panel Wipe. Maintain afterwards with Yum Wash, Yum Detailer and occasional Yum Ceramic top-ups only when protection performance starts to fade.

Recommended YumCars pairings:

Paint Serum II
Paint Serum VI
Yum Panel Wipe
Yum Ceramic

Pro Tip

Keep one towel for initial levelling and a second clean towel for final inspection. On darker paint, finish each section with slow, straight-line passes under inspection lighting to catch any remaining carrier oils before they cure.

Frequently Asked Questions

Is Paint Serum IV harder to apply than Paint Serum II?
It is more performance focused and should be treated as an advanced coating, but it remains designed for a straightforward, controlled application when preparation is correct.

Can it be topped with Yum Ceramic?
Yes, once cured, Yum Ceramic can be used later as a maintenance topper if you want to refresh slickness and water behaviour.

1. Work only on clean, cool paint in an indoor environment with controlled airflow.


2. Complete a full wash and decontamination process, including tar removal, iron removal and claying where required.


3. Machine polish the paint if defects need to be removed or gloss needs to be refined.


4. Wipe down thoroughly with Yum Panel Wipe to remove oils, silicones and polishing residue.


5. Apply Paint Serum IV to a small section at a time using a suitable coating applicator.


6. Monitor flash time closely and level with clean microfibre towels before residue becomes difficult to remove.


7. Inspect for high spots using strong lighting, then allow the coating to cure undisturbed.