Synthetic fragrances are often comprised of petrochemicals, parabens, phthalates and synthetic musks, all of which can cause allergic reactions, migraines, and a whole host of other sensitivities. Companies use them because they are cheap and they remain stable for a long time. Synthetic fragrances are often comprised of petrochemicals, parabens, phthalates and synthetic musks, all of which can cause allergic reactions, migraines, and a whole host of other sensitivities. Companies use them because they are cheap and they remain stable for a long time. EVER is committed to only using natural fragrances derived from essential oils such as bulgarian rose, indian jasmine, lavender, vanilla, citrus and almond.