anyone know any remedy for cold sores?

Assalamu Alaikum wa Rahmatullai wa Barakatuhu,

Every winter I have a tendency of getting cold sores both on my hands and my feet...
I keep them well moisturised, but this still this happens... hmmm...

Anyone know any remedies??

That also reminds me, the sun feels so wonderful in winter...that automatically one ends up saying Alhamdolillah...
Just imagine a winter without sun... it would be just terrible.....