"We try to make it a personal experience for them," the barber said.
It is hoped research findings will help doctors target care for children.
Becoming a parent delivers a bundle of joy but for some of us, it can also bring a whole new world of worry.
"They love the dolls and feel represented," he says of the effects his creations have on the kids they are given to.
Tara Mandarano was diagnosed with PMDD after the birth of her daughter - a severe, darker form of PMS.
Trust me, I have one.
It's like time stood still.
The researchers have called the findings 'compelling'.
It's not a situation I planned for, but I don't regret any of it, and I'm happier now than I've ever been in my life.
I feel like I'm on a bad first date where I'm trying way too hard to make a connection.
"My son just happens to get some extra love," the mum wrote.