What does sheen mean in slang?

In slang, sheen is used in a few informal ways that build on its literal meaning of a soft shine or luster. In beauty and fashion slang, sheen describes a healthy, glossy, polished appearance, especially for hair or skin. If someone says your hair has a nice sheen, they mean it looks shiny, smooth, hydrated, and well cared for, not dull or dry. On social media platforms like TikTok, sheen is associated with the glossy girl, clean girl, or glazed aesthetic that emphasizes dewy skin, sleek hair, glossy lips, and an overall expensive, put-together look. In some communities, sheen is used as shorthand for the fast-fashion retailer Shein, pronounced the same, as in I got this dress from Sheen. In a more critical or figurative slang sense, sheen can imply a superficial polish that hides flaws, as in a sheen of professionalism that covers up lack of substance, similar to saying something is glossed over. In hip-hop or street style slang, sheen can occasionally mean flashy or showy shine, like bling. Overall, slang uses of sheen center on ideas of shine, health, polish, and sometimes superficial attractiveness rather than deep quality.