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iindeo

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Hello, can anyone tell me what the average shelf life is on soap? My favorite base recipe contains lard, soy and coconut oils. Does anyone out there use a preservative?
 

zee

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I don't use a preservative. I superfat at an average of 5-6%, and my bars last a long time, the fragrance may dissipate after a certain amount of time (after a year at least if at all). Milk soaps tend to not last nearly as long. I would not count on my soap lasting as long if my superfat was any higher than it is right now.
 

iindeo

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superfatting/preservative

Thanks, I superfat at 6% as well. My main concern was the lard in the base and how that holds up over time. What is the max amount of fragrance you use per pound?
 

MikeInPdx

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Lard and palm oil soaps tend to hold up forever. Soy not so much....I use more soy than some so I add ROE as an antioxidant.

The fragrance oil usage depends on the company and the strength of the fragrance. They should have a usage guide posted for soap....they're generally pretty much right. :) I myself tend toward the low end for heavy spice and florals, and toward the heavy end for citrus. :)
 

zee

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I have used anywhere from .5 oz - 1 oz FO per pound of fats, it depends on the manufacturer, and the type of scent. You can go on the lower end with florals especially :)
 

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