Well I bought an 8 oz applicator bottle. I then melted about 4 oz of coconut oil in a bowl, added 2 oz of olive oil, and a 1.5 oz of castor oil....I didn't want to use 8 oz of oil because I wanted to make sure there was enough room for the sulfur...Anyway I wanted to make a 10% mixture (Some might prefer 5%) So I did a ratio of sulfur to oil and set it equal to 10% so basically... that means I would nead 0.75 oz of sulfur. If you were doing 5% you would need 0.37 oz of sulfur. It will help you with measurements if you convert ounces to Tablespoons or teaspoons....it is hard to measure .37 oz!! I then put the sulfur in the bottle and added all the oil...shook it up and there was my mix!!
At first I used to heat it up before application but then I heard, that the constant heating of castor oil causes it to go rancid. Hope this helps.