Warm soapy water and a good rinse
didnt ever touch it mate and that was kettle water:|
How do people wash it from their skin then or clean greasy pots and pans.
I've had oil and grease on my brush at various time and i use a bucket of warm soapy water, put brush in , rub bristles with hand, rinse brush under running water and repeat until brush is clean
Use a strong washing up liquid or sugar soap, if its that bad then I suggest sugar soap as this cleans almost anything from everything