Is your infant up every 40 minutes after putting them down for a nap? Are they waking up at the crack of dawn? One key factor that influences sleep quality is light exposure. Parents often wonder about the ideal sleep environment to promote restorative sleep. Understanding how light affects sleep can help you create an optimal sleep setting for their babies.
Do Infants Sleep Better in the Dark?
How Does Light Affect Infant Sleep?
Light exposure plays a significant role in an infant’s sleep patterns. Natural and artificial light impact melatonin production. Melatonin is the hormone responsible for regulating sleep-wake cycles. Bright light exposure, particularly during the evening, can suppress melatonin production, making it harder for infants to settle down for the night. If your little one is struggling with the witching hour, light exposure could be a part of the problem.
Melatonin and Sleep-Wake Cycles
Melatonin levels naturally rise in the evening, promoting drowsiness and helping infants stay asleep longer. The best and most restorative block of sleep infants get is in their first block of sleep. However, exposure to artificial light—especially blue light from screens or nightlights—can disrupt melatonin production, leading to more frequent night wakings and shorter sleep cycles.
Benefits of a Dark Sleep Environment
Creating a dark sleep environment can significantly improve infant sleep quality.
Promotes Melatonin Production: A dark, cool, and comfortable room encourages the natural release of melatonin, leading to longer periods of sleep.
Reduces Visual Stimulation: Darkness limits distractions that might otherwise keep infants awake or cause them to wake between sleep cycles. This can be incredibly impactful during naps!
Supports Circadian Rhythms: Circadian rhythms are largely determined by exposure to light, and even a small amount of light can disrupt sleep, so it’s important that the room in which he sleeps remains dark. Think blackout shades and avoid the nightlight outside of feeding times.
Addressing Fears and Anxieties
As infants grow, they may develop fears of the dark. However, true fear of darkness typically emerges in toddlerhood rather than infancy. For younger babies, a completely dark room remains ideal for sleep. If your toddler starts to express fear of the dark, around the age of 3, it is okay to begin using a nightlight.
When to Introduce a Nightlight
If a child expresses fear of the dark, introducing a nightlight with a warm, red or amber hue can be beneficial. These colors have less impact on melatonin production compared to blue or white lights. Before the age of 3, a nightlight can be counterproductive. A lot of young toddlers lack the ability to sleep with a nightlight. It can be really distracting and overstimulating causing middle of the night and early morning wakings.
Products like the Hatch or the LittleHippo can act as both a nightlight and an okay-to-wake clock. When your child is mature enough to understand sleep rules and boundaries, introducing a nightlight is totally fine. The American Academy of Pediatrics (AAP) does recommend keeping light exposure minimal to avoid disrupting sleep.
Newborn/Infant Sleep vs. Toddler Sleep
Tips for a Newborn Sleep Environment:
- Use blackout curtains to create a dark sleep space for both naps and nighttime.
- These are my two favorite blackout shade options, these are paper and can be cut, they’re great for travel. These are more secure and frame right to your window, no light will come through with these!
- Keep the room cool and comfortable. Infants sleep best in cooler temperatures: 68 to 72 degree Fahrenheit.
- Use the no light/hand trick: If you can see your hand in the dark, the room may not be dark enough.
Tips for a Toddler Sleep Environment
- Minimize screen exposure before bedtime, as screens produce lower levels of melatonin.I would recommend eliminating screens at least an hour before nap and bedtime.
- Continue using blackout curtains to support a consistent circadian rhythm. Even if your older toddler is using a nightlight, I would still recommend using blackout curtains or shades.
- If needed, opt for a dim, warm-colored nightlight to help with night wakings and early morning wakings.
- Maintain a consistent bedtime routine to encourage longer periods of sleep. If you are struggling with a consistent bedtime routine for your toddler, check out this blog. Protesting bedtime is REALLY normal between 2-4 years old. A solid bedtime routine can make this easier.
A dark sleep environment is essential for promoting restorative sleep in infants and toddlers. By limiting light exposure, especially at night, parents can help regulate their child’s sleep patterns, reduce night wakings, and support healthy circadian rhythms. Following recommendations from the AAP and creating a dark, cool, and comfortable sleep space can lead to better sleep quality for babies and toddlers alike.
Sleep Shore Sleep Consulting
Does your baby take short naps? Does your child wake up early in the morning? If your child is unable to fall asleep, stay asleep, or wake up at a normal time, it may be time to consider sleep training. Sleep Shore offers personalized solutions for each unique sleeping situation to get your little one on track- whether they’re a newborn, infant, or toddler. We also offer in home sleep training services in the Boston, Massachusetts, Central Michigan (Midland, Clare, Mt. Pleasant) and Traverse City, Michigan. Sleep training offers babies and children with the skills to fall asleep on their own so they can wake up feeling more well-rested- and in turn, you’ll feel more energized, too! See what this mama had to say about our sleep services below:
“We started a program when our LO was 17 months. He was fed to sleep every night and up every 2-3 hours and sometimes took up to 2 hours to go back to sleep. I was completely exhausted and knew I needed help. I had seen a recommendation from Lexi’s Clean Kitchen on Instagram for Molly and decided it was time to pull the trigger.
Molly was very accommodating with our anticipated start time and provided plenty of information and support both before and during the “training” period. We ended up using a couple methods before finding the one that worked best. Being able to message Molly and keep in contact with her during the whole process gave us a lot of confidence in pressing on. Our little guy took to the program so well and we even traveled with him recently with great success! I would absolutely recommend Molly and am grateful every day that we made the decision to reach out to her.” – Mom of 17-Month-Old