The Ordinary’s Caffeine Escin Serum Revives Tired Skin

I haven’t noticed any change in my facial structure, but serums in general can only do so much, and it seems Dr. Phillips agrees: “A topical serum may temporarily reduce puffiness and improve hydration, which can make the skin appear fresher, smoother and slightly more defined, but the effects of a serum are limited to the skin,” he tells me. It’s not all about your collagen, either, as Dr. Phillips explains: “Facial shape and structure are also influenced by the underlying muscles, ligaments, fat compartments, and facial skeleton, which a topical product cannot alter.”