How to get congealed grapeseed oil ring out of bottom of bottle

by Elisa

Ive tried soaking in Dawn and boiling water and that got most of it out but not the ring at the bottom. I dont have a skinny brush . I remember reading about something abrasive that you put in the bottle and shake until the debris loosens. However I dont remember what they used as abrasive. Its a lovely decorative bottle I want to save. Thanks!!!!

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