That's because "soft touch" finishes are usually basically incompletely polymerized plastic painted on the body instead of more premium materials like rubber or

That's because "soft touch" finishes are usually basically incompletely polymerized plastic painted on the body instead of more premium materials like rubber or silicone, and yes, they will break down over time. You can fix it using isopropyl alcohol and a scotch-brite or similar sponge to scrape it off, but better not to have it in the first place.