soft soap

soft soap
1 semi-liquid soap 半液体皂; 软肥皂.
2 (fig 比喻) persuasion by flattery （用奉承话的）劝诱; 灌米汤的做法
    I'm tired of his soft soap! 他老是说好话想打动我, 我都听腻了!

牛津英汉双解词典