The benefit of white noise and sleep trainers for babies - What is it and why does it work?

by Milk Bar on May 08 2025

A good night's sleep is worth its weight in gold – for your baby and for you as a parent. But what if your little one has trouble falling asleep or wakes up frequently during the night? Fortunately, there are tools that can help you establish a healthy sleep routine. In this blog, you will discover the benefits of  white noise and sleep trainers , and how they help your baby (and you!) get more rest.

What is white noise and why does it work?

White noise is a constant, soft sound that plays all audible frequencies at once – like the hum of a fan, the rustling of the sea, or rain on a roof. For babies, this sound is soothing for several reasons:

  • Themasks sudden noises(such as a barking dog or a slamming door) so your baby is less likely to wake up startled.

  • Theboots the sounds your baby heard in the womb , such as blood circulation or the rhythm of your heartbeat – that feels familiar and safe.

  • It helps babies tofall asleep faster and sleeping longer , because their brain is less distracted by environmental sounds.

💡 There are white noise machines specifically for babies, often combined with a night light or soothing music.

What is a sleep trainer?

A sleep trainer is a tool that helps babies and toddlers to day and night to learn to distinguishOften this is done with the help of a light, colors, sounds, or figures that indicate when it is time to sleep or get up.

Especially for children who wake up early or have trouble staying asleep, a sleep trainer can provide a clear visual routine.

For example:

  • Blue light = night → just a little more sleep

  • Green light = morning → it's okay to get up

Children learn this way structure and rhythm , without you as a parent having to constantly explain why it is not morning yet.

How do you combine white noise and a sleep trainer?

White noise is ideal from birth to calm your baby and mask environmental sounds. A sleep trainer is often only useful later – from around 18 months – when your child is able to understand visual signals.

Together they can form a powerful duo:

  • White noise helps with falling asleep and staying asleep

  • A sleep trainer supports the sleep routine in the long term

 

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