The key nuance is that these are usually finish or impression words, not claims that someone’s skin has literally no pores or texture. And English beauty marketing sometimes flattens several different Korean terms into “glass skin.”

• 물광 (mul-gwang): a distinctly dewy, water-reflective look; mul means water, gwang means glow.
• 윤광 (yun-gwang): a softer, more even sheen—often less wet-looking than 물광.
• 꿀광 (kkul-gwang): “honey glow,” suggesting a warm, plump-looking shine.
• 도자기 피부 (dojagi pibu): “porcelain skin,” usually smooth-looking and refined; it doesn’t necessarily mean matte.
• 구름 피부 (gureum pibu), or “cloud skin,” is less fixed: in current beauty talk it can mean a soft-focus, airy finish, but usage varies by brand and creator.

The practical distinction is where the light sits: 물광 is visibly glossy, 윤광 is a restrained sheen, while cloud/porcelain language tends to suggest a blurred, smoother-looking surface. None of these requires perfectly textureless skin—lighting, skincare layering, and base makeup all shape the effect.