this harms the sex toy, it’s called seasoning. You need to protect it, the crusted brown outer layer is a protective coating for it. Without it, the toy will rust. Don’t wash your toys people!!
wash but ALSO that kind of toy is NOT meant to be touched directly to your parts, jesus christ it is made out of foam or something.
use a dental dam. or a sheet. or your pants. or anything. I keep mine jammed inside a Primal HardWere silicone Tentacle Sheath which I wash every time. just do not touch that garbage directly to yourself for godsake