What are these white residues on the tires here?

[echappist]

These are the Gatorskins clinchers I listed on classified. Because I never used the tires (only took out one from its packaging), I thought both would still be in good condition. However, it seems like there are white colored residues on the crowns on the tires, more so on the out-of-packaging tire. It could be scraped off from the tread, but it's making me a bit uneasy. Is this just talc used in the rubber compound? Or is this something worse and more serious?

On the in-packaging one, notice the white marks on the right of the black band that runs across the tire (vertical direction in picture)

https://dop9tq.by.files.1drv.com/y4mOgL9UXKVn-1am5vBdHaMfAOwjGyAIVFNXc13jcULePUjU2_Ynn8g862NY3Bv rLYbADKXdsNiRhXDGZTt8t56FfKhRx_15CU1sCrt42-iyIjNxgwiz4Hd9QnA-KKONfSkTiq6pWWJGPu5hG2omXjmK7uZpkic9FG1soROsFtIDAV KTTmZl-CT5ktGJyL3pY2DD0NbF7f2-vPzFlaDJKdg_A?width=660&height=495&cropmode=none

A lot more apparent on the out-of-packaging tire

https://doosew.by.files.1drv.com/y4mTXOt2CtFGbWD79u_vduu86J0RGBZ4MYy8fEcGvL1ESvixiH vO2NMLX2wmUdXDYaXQ_QGwfKRS3LXwFCD9OqBi6ZXYxr_uFElg 4y6fUxB0piJmpaQna-eYTDyHEOCfEXCgoAakT4AWEejLmh_mpAOba48MhswI0b3Q81YY QTXGrblp1i_0ciRxgTbxyw6UhxBxXESeYbYYlkMbyEsbz3KUw? width=660&height=495&cropmode=none

[ColonelJLloyd]

Human skin cells? Tires look like that after I mount them on a rim. It's nothing to worry about.

[Jaybee]

i always thought that was the compound they used to help the rubber release from the mold after it was injected. I see it on almost all my new tires. Bontrager tires in particular seem to have a ton of it.

[charliedid]

I think it's just a normal wax used in production and nothing to worry about...

Fairly sure :)

[charliedid]

i always thought that was the compound they used to help the rubber release from the mold after it was injected. I see it on almost all my new tires. Bontrager tires in particular seem to have a ton of it.

Exactly

[echappist]

Human skin cells? Tires look like that after I mount them on a rim. It's nothing to worry about.
That's a possibility I haven't thought of
i always thought that was the compound they used to help the rubber release from the mold after it was injected. I see it on almost all my new tires. Bontrager tires in particular seem to have a ton of it.

Only thing with that is how it seeped out more in the tire I took out from packaging.

[AngryScientist]

what white powder??


https://memegenerator.net/img/instances/57422358.jpg

[m_sasso]

Likely Lyndcoat or ReleaSys mold release agent.