Teach Soap

How can I make the scent last a long time ?

How long is long? If you find your soap's fragrance is not sticking within a 6 to 10 week curing time, I'd try adding more fragrance next time up to the maximum safe amount stated for the particular FO/EO for the purpose. Otherwise change to fragrances that stick better. Reading the online reviews about specific EO/FOs helps in this regard.

All EO/FOs are volatile, meaning the substance evaporates into the air little-by-little, never to be seen (smelled!) again. If this wasn't the case, we would not smell them. If you need to keep scents around for years AFTER being fully cured (I'd give cut bars at least 2 month cure first to be on the safe side), then simply provide an air barrier so that the scents cannot "escape". Shrink wrap or vacuum packing in plastic is one way of doing this, or mass storage in perfectly air-tight containers.

Sometimes you'll find your soaps loose a lot of their scent soon after the cure, but remember you're only smelling the surface where the fragrance molecules escape from first. A fully cured bar is pretty dense and the fragrance molecules inside it cannot escape like those at the surface layer do. Once you get the bar wet and wash with it, the scent magically reappears because you've removed that outer layer where the scent was depleted.

That depends which fragrance you use and what the vendor's recommendation is. Some, like orange oil will fade in soap. Are you going by weight?

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Irena
Closed minds are like faulty parachutes; they refuse to open.

Thank you so much. oh I just pour in the essential oils until I smell the fragrance.

_________________
Irena
Closed minds are like faulty parachutes; they refuse to open.

Essential oils must be weighed out when making soap just like your other ingredients like lye, water, and base oils. The amount used to start out can be from one of the online fragrance calculators, but double check the amount it recommends with the maximum use amounts recommended by the manufacturer for soap making to be safe. Usually the right amount ranges from .3 to 1 ounce for each pound of oil (or 20 to 62 grams per kilogram oil) depending on the EO.