This essence contains hydrating hyaluronic acid, collagen, glycerin, and flax. It's the definition of a "fat water" product: It's quite thick, but not so much that you can't layer it without it sinking right in. It comes in a shaker bottle, with no added colors or fragrances, and no detectable scent.
I love how hydrated this makes my skin feel. I usually do up to seven layers of toner/essence, but with this one I only need three. I experienced zero irritation and no breakouts--just happy skin!