This dad's tissue trick gets your baby to sleep in 40 seconds!

Forget the lullabies and hours of rock-the-cradle as an Aussie father shared his amazing tip for getting your baby to sleep in less than a minute using a tissue.

Sydney-based doting dad Nathan Dailo uploaded his life-changing trick to YouTube in March, much to the joy of sleep-deprived viewers, the Daily Star reported.

In the video that has gone viral, Dailo's three-month-old son Seth is seen fidgeting in his cot, but after dad simply slides a piece of tissue over his face repeatedly, he drifts off in just 42 seconds.

Dailo wrote "I am sure every parent tries new things to put their little one to sleep. Watch as my wife and I put our 3 month old baby boy, Seth, to sleep in under a minute using nothing but a piece of tissue paper."

One grateful viewer of the video commented "this worked for my baby 5 times already so thanks!" while another said "unbelievable...