Meaning of the word "one hand washes the other and together they wash the face" in English

What does "one hand washes the other and together they wash the face" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

one hand washes the other and together they wash the face

US /wʌn hænd ˈwɑːʃɪz ði ˈʌðər ænd təˈɡɛðər ðeɪ wɑːʃ ðə feɪs/
UK /wʌn hænd ˈwɒʃɪz ði ˈʌðər ænd təˈɡɛðər ðeɪ wɒʃ ðə feɪs/
"one hand washes the other and together they wash the face" picture

Idiom

cooperation and mutual aid between people lead to greater success or benefit for everyone involved

Example:
If you help me with the marketing, I'll handle the logistics; one hand washes the other and together they wash the face.
The two companies formed a partnership because one hand washes the other and together they wash the face.