I have thick, coarse, "strong" hair, and ordinary kirby grips either bounce straight out or won't even go in.
I found some sort of rubber coated grips in Boots a while ago and they worked really well - once in they didn't slip or pop out. Bit snaggy to take out but worth it - and I managed to leave THE ENTIRE CARD FULL OF THEM at a hotel in bloody Birmingham. FFS.
And now I can't find anything like them anywhere! There are some coated, "comfort" ones by Scunci on the Boots website, but I don't think they're the same. All Google, Amazon and eBay searches turn up nothing but products in the US and Canada.
Any ideas? Or recommendations for something else to try?