I see nobody here has reynauds,
Nothing helps me. Gloves don't either help me. Once my hands are cold it's practically game over until I get to a heat source. It takes 2-5 minutes until my hands feel frost bitten (obviously depending on how cold it is).
I always tend to imagine that what Dovid hamelech had was similar to that. Clothing doesn't keep you warm.
My father has told me that vitamin E helps with circulation but I'm not a vitamin guy so haven't tried it.