to plug82man82 :And it usually contains some antibacterial agent to help it keep better! Anyway, I would boost it with some powdered lubricant, like j-lube. They are the perfect combination! :P
to Bibi_Anne :to avoid the milk use just water, i use milk for color (look alike cum), and i dont need preservatives because i male it and i use it same day, so no time to get rancid or rotten u know