Scratches that stay in the clear coat can usually be polished out. Scratches that reach the color or primer need paint. The fingernail test sorts them: if your nail does not catch, polishing may work, and if it catches, the scratch goes deeper.
Key takeaways
- No catch means clear coat only.
- A white or grey line means primer is showing.
- Polishing removes a thin layer, so it has limits.
Run your fingernail across it
Clean the area, then drag a fingernail across the scratch at a right angle. If the nail slides over, the scratch is shallow. If it snags, the scratch cuts through. Water also helps: if the scratch disappears when wet, it is probably clear coat only.
What polishing does
A polish uses fine abrasives to level the clear coat around the scratch. Light is no longer scattered, so the scratch seems to vanish. The process removes a very thin layer of clear coat. Repeated polishing can wear through, so it is not a repeat fix.
Colors and what they tell you
If the scratch is the same color as your paint, it is in the color layer. If you see white or grey, it has reached primer. If you see silver, it has reached metal, and rust can start within days to weeks. Deep scratches need sanding, primer, color and clear coat.
When touch-up pens help
A pen can seal a deep chip and slow rust. It does not make the chip invisible. Use it on small chips, not on long scratches.
When to get an estimate
If the scratch is long, spans multiple panels or goes to metal, bring the car in. We will tell you if it buffs, needs paint or is best left alone.
Get a free estimate in Santa Clara
Questions about scratch & paint repair? Read our Scratch & Paint Repair page, call (408) 243-2530, or send photos through the estimate form. International Auto Center Body Shop, 1499 Lincoln St, Santa Clara, CA 95050. Open Monday to Friday, 8:30 AM to 5:30 PM.
Frequently asked questions
Do wet scratches mean it is shallow?
If it vanishes when wet, it is likely clear-coat only.
Can I buff scratches myself?
Light ones, with the right product. Aggressive compounds can damage paint.
What if the scratch shows metal?
Seal it soon to prevent rust, then get a repair estimate.
Is a scratch covered by insurance?
Vandalism may be covered under comprehensive coverage. Check your deductible.