This rub has a couple different uses!
It helps greatly with sore muscles & joints by improving bloodflow and because of the anti-inflammatory properties in cayenne, the penetrating nature of castor oil, and the anti-inflammatory properties of beeswax.
The increased blood flow also helps aid in improving circulation which can be useful for those who struggle with cold extremeties, such as those with Raynaud's. I experience Raynaud's symptoms myself and have had success within minutes of utilizing this salve on my hands in winter!