Who started “DIY slime craze”?

Karina Garcia, on YouTube, Aug 12, 2015. It reached 6 platforms in 3.6 years.

LineageEach dot, 100,000 instagram slime-related posts; broader tag scope, April 2018ContestedKey steps, 12 of 16. Lines follow time and platform
Karina GarciaFirst postSlim3Prim PattanapornInstagramElmer's / Newell BrandsRetailPlatform jumpPressBacklashPlatform jumpCommercialOwner responsePeak proxyPlatform jumpAfterlifePatient zero