雪花膏 is a traditional Chinese facial cream, literally 'snowflake cream' — a thick, white moisturizer that was especially popular in mid-20th-century China. It's a culturally loaded term that evokes nostalgia for a bygone era, often associated with grandmothers or vintage beauty products. The name comes from its snow-white appearance and the way it 'disappears' into the skin like snow melting, which is also the origin of the English term 'vanishing cream'.