nope...a sindoor can't save a husband...I have seen many religeously putting vermiliion in their parting still unfortunately they bcame widow in later part of their life.
(I remember one funny incident in UK .want to share with you guys..One lady in my office with sindoor in her parting..Her boss (UK citizen) asked her what is this red mark? she was there with her hubby as both worked in same office though diffrent projects.
She answered in a jiff : it is my hubby: .Then next the boss got confused and pointing towards her husband asked "then who is he?") everyone on the bay including me were 🤣
(No offence to any one...I myself a hindu follow this tradition..I just wanted to tell you how sindoor and bindi put us in awkward situation in onsite location...)