The Most Common Cause: Bare Metal or Plastic Without Primer
Bare metal or bare plastic means the scratch or chip has gone deeper than the factory paint and primer layers, exposing raw metal or plastic underneath.
Touch-up paint cannot adhere directly to bare metal or plastic. The factory primer that originally allowed paint to stick has been removed, and it must be replaced before color can bond.
What Happens When Paint Is Applied to Bare Metal or Plastic
Primer provides a textured, chemically compatible surface for paint to grip. Without it, these effects can occur:
Base coat paint will wipe or sand away easily
Paint may appear to “disappear” or return to bare metal
The surface will not hold color, no matter how many coats are applied
This is normal behavior and does not indicate defective paint.
Other Common Reasons Paint May Not Stick
If primer is present, these other application issues can also cause adhesion problems:
Sanding or wiping the base coat before clear coat
Base coat paint is fragile until it is sealed with clear coat.Using alcohol, water, or soap on unsealed base coat
Liquids can lift or remove base coat before it’s protected.Applying coats too heavy or too quickly
Thick coats don’t cure properly and can pull away from the surface.Surface contamination
Wax, grease, dirt or polish residue can prevent adhesion.Temperature or humidity issues
Out-of-range temperature or humidity can lead to the paint not curing sufficiently before the next coat is applied.
What to Do Next
Follow these steps to correct the issue:
Stop sanding or wiping the base coat
If color is exposed, let it dry undisturbed.Check for bare metal or plastic
If bare metal or plastic is visible, primer is required before applying color.Apply primer if needed
Use primer to rebuild the adhesion layer.Ensure a clear repair area
Use a prep wipe and tack cloth as needed to clean and remove dust.Reapply color in multiple light coats in the correct temperature and humidity environment
Allow proper flash time between coats.Seal with clear coat
Clear coat protects the color and locks it in place.
Kit-Specific Guidance
Bottle kits: Apply with light strokes, allowing each coat to flash.
Aerosol kits: Use light, even passes and follow recommended flash times.
For full step-by-step instructions, refer to the appropriate guide in Where Can I find Your Instructions in Related Articles below.
When to Ask for Help or Share Photos
If you’re unsure whether primer is present, or if paint continues to wipe off after following the steps above, our Support team can help confirm what’s happening.
Sharing a clear photo of the repair area allows us to:
Confirm whether bare metal or plastic is exposed
Verify prep and application steps
Recommend the correct next step
This helps ensure the fix is accurate before you continue.
FAQ
Why does the paint look fine but wipe off later?
Does paint not sticking mean my paint is defective?
I ordered an Essential kit. What do I do if I forgot primer?
If bare metal or plastic is exposed, primer is required before applying touch-up paint. Paint will not adhere properly without it.
If your kit did not include primer, you can apply a compatible automotive touch-up primer, allow it to dry, then apply coats of color followed by clear coat.
You can find the correct primer here: