Sunscreen on paint

[cb242]

Hi guys,

I just got back from the beach and I found that I've got marks on my roof from sunscreen that was on my arms. It was from loading/unloading paddle boards. My paint did have a coat of wax on it but now the finish looks dry or dull in a few places. How should I start with correcting the spots? I've read to use a citrus cleaner or clay bar. Any other ideas?

[CopperMtnGuy]

I would try some wax prep soap (something like dishsoap) then rewax that area.

[FUNX650]

Sunscreen is one of the products that has what I call
actual Nano-particles (usually less than 100nm in size)
in its formulation:
Titanium dioxide (TiO2); grayish/whitish-looking stuff.

Unfortunately, for vehicles (the Jury is still out
on how Humans are affected):
These Nanos will be small enough to penetrate
vehicles' paint-systems---and the longer they're
not removed/wiped-off the paint: the possibility
of deeper, and deeper penetration exists.

I'll suggest to first try an AIO.
Then if needed: Move up to the more
dedicated polishes/compounds.

Note:
I've seen the imprints of sunscreens "come back"...
even after a complete wet-sanding process.
Only a re-spray completely corrected the issue.

Hope that's not the cure for your situation.
Good Luck in your efforts!


Bob

[cb242]

Thanks for the suggestions. I'll report back after I try a few things this afternoon. I'll keep my fingers crossed!

[Dr_Pain]

what Bob said!

[Ccrew]

Sunscreen is one of the products that has what I call
actual Nano-particles (usually less than 100nm in size)
in its formulation:
Titanium dioxide (TiO2); grayish/whitish-looking stuff.

Titanium dioxide is now being used as a new treatment for window glass because it attacks and degrades anything that touches it, thereby helping to keep windows clean.
Geek link: https://www.youtube.com/watch?v=UgbT2fJTqFY

[cb242]

Would clean up of a zinc oxide based sunblock be the same as titanium dioxide?

[giopiscasio]

Wow very cool!


Sent from my SAMSUNG-SM-G900A using Tapatalk

[cb242]

From what I can see...I was able to remove the spots last night. I cleaned the area, tried the clay bar and a spray polish but none of those efforts made the spot look any better. I ended up polishing by hand with meguiars ultimate polish this helped a lot but I could still see an outline of the spot so I continued with the same polish with the DA polisher. After a few passes, I couldn't see any imperfections. I followed up with liquid wax. Hopefully the spot won't come back.

**Bob - How long did it take for the spots to come back on the vehicles you've worked on?

[FUNX650]

From what I can see...I was able to remove the spots last night.

That's good news!
Thanks for the follow-up...

**Bob - How long did it take for the spots to come back on the vehicles you've worked on?

Usually around 3-4 months.
But I can only conjecture that was where enough of the
sunscreen had originally been left on the vehicle long
enough to where it had penetrated the CC, and then
down to/into the BC.

By attacking your sunscreen issue in a timely manner,
hopefully that amount of penetration did not/will not
occur with your vehicle.


Bob