What is sheen in slang?

In slang, sheen has several informal meanings that build on its literal sense of shine and polish, as well as its use as a surname and retailer name. In beauty and fashion slang, sheen is often used to describe a healthy, glossy, polished appearance, especially for hair or skin. For example, someone might say she has a nice sheen, meaning her hair looks shiny and healthy, or that product gives a nice sheen. It is similar to saying glow or gloss. In social media slang, particularly on TikTok and Instagram, sheen can refer to the glossy girl or clean girl aesthetic of looking dewy, hydrated, and expensive. In some communities, sheen is short for the retailer Shein, as in I got this from Sheen. In hip-hop or street slang, sheen can occasionally be used to mean something flashy, shiny, or showy, similar to bling, though this is less common. When used critically, having a sheen can imply superficial polish that hides flaws, as in a sheen of professionalism that covers up incompetence. In British slang, there is no strong separate slang meaning beyond shine. Overall, slang uses of sheen center on ideas of shine, health, polish, and sometimes superficial attractiveness.