Good field workers but not the sort of people you would let your hair down with.

People could relax and sort of let down their hair.

He's got to the point where he doesn't let his hair down with anybody.

She had let down her gray hair and looked more casual than during the service.

Although, come to think of it, letting down his hair might be even more fun.

Is putting on a wig the only way a man can let his hair down?

You only wish that the authors had let down their own hair more.

I didn't want to see them let down their hair, or anything else.

We all need to let down our hair a little bit.

She then leaves the car, walks towards the sea, and lets down her hair.