silky smooth
1. Very smooth; having a texture that is likened to silk, which is valued for its smoothness. What products do you use to make your hair so silky smooth? I just bought some silky smooth sheets, and now I never want to get out of bed! How did you get this chocolate mousse to be so silky smooth?
2. Charming in speech and behavior. Chad is so silky smooth that he always has a group of women swooning over him in any bar.