Diethyl Phthalate (DEP)
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Diethyl Phthalate (DEP) is the best substitute for DPG for non-alcoholic perfume filters, also known as solfiol or solfitin in the perfume world. DEP can dissolve perfectly on every fragrance/ perfume oil, giving long lasting/aromatic effect, and not leaving any hot effect on skin. Most of it is the viscosity that's watery like the viscosity of WATER, making DEP can be used to make non-alcoholic perfume in SPRAY or ROLL ON.