toners are lighter base layers that go on after you cleanse your face. they get rid of excess oil and dirt, prep the face for later steps, and help skincare products absorb more easily. *when I say lighter, I mean in terms of layeringโฆ toners can be thick, watery, or creamy depending on the kind.
essences are thicker formulas that help seal in moisture and heal the skin. theyโre normally more concentrated than standard moisturizers and again, help your products absorb.
Iโm not a skincare expert at all, but I always think of it as your toner gets your skin ready for your products and your essence gets your face ready for moisture.