NOW Foods Peppermint Oil 4 fl oz delivers 100% pure, steam-distilled Mentha piperita essential oil in a generous economy size — ideal for practitioners, households that diffuse peppermint daily, and DIY natural product makers. Peppermint oil is one of the most researched and multi-purpose essential oils, with clinical evidence supporting its use for headache relief applied to the temples, improved focus via aromatherapy, and respiratory support during diffusion. NOW Foods verifies menthol and menthone content through GC/MS testing to confirm therapeutic quality. At 4 fl oz this size delivers exceptional value for regular users. Always dilute before topical application; keep away from infants.