I’d like to start off by saying that I feel the Philips SmartSleep Deep Sleep headband actually did make a difference in my alertness and ability to function normally on days following nights where I slept less than 7 hours. The product is specifically for people who usually get less than 6 hours of sleep or regularly sleep only 5 to 7 hours due to choice or lifestyle. That’s a really important point because if you have a sleep disorder or condition like insomnia or sleep apnea this product isn’t designed to help you. There are a lot of conditions you have to meet in order to use the device as well, for example: be under the age of 50, be able to hear 80 dB, and be able to fall asleep quickly without any aid.
Since I met all of the requirements I thought that product might be a good fit for me. As a reference point, I normally need between 8 and 9 hours of sleep to function optimally the next day and feel refreshed. I know from experience that when I sleep less than that, I wake up feeling tired, am exhausted throughout the day, and sometimes get headaches or even migraines when I’m sleep deprived over consecutive days. So in order to faithfully test out this product, I restricted my sleep to 5 to 7 hours per night for two weeks straight to align my habits with the target consumers and determine if the product could actually help me sleep less and feel optimal, or at least normal, the following day.
What I found was that, yes, on nights where I slept fewer than 7 or even 6 hours, even though I felt terrible shortly after wakening, that feeling did not persist throughout the day, and after about an hour I actually felt alert enough to get through work, concentrate on tasks, and power through pretty late into the night without needing to take a nap or generally feel too exhausted. Even while following this routine for multiple days back-to-back I never got to the point where I had bad migraines or decided I couldn’t handle the restricted amount of sleep.
From a functionality standpoint, the sensors on the headband always picked up their signals immediately, after placing a drop of water on my forehead under the contact point. Syncing the data with the app the next day was simple too. The app logged the data that the headband tracked during the night and gave me an insightful breakdown of my sleep pattern and progress over time. My first night with the device I slept 5 hrs and had a sleep score of 51 with a Sleep Boost measurement of 14. After several more nights, some where I got 6 hours of sleep or more, I regularly received Sleep Boost scores in the mid to high 20s; as a result my total sleep scores were in the 90s, and sometimes hit 100. That said, if you get more than 7 hours of sleep the app will always give you high sleep scores, so it’s unclear how much the device is helping you, if you get adequate sleep. In general, the higher the sleep score form the night before, the better I felt and functioned the next day. Only once during the two-weeks did the headband shift and disconnect in the middle of the night, because I rolled over and the headband slipped off my forehead, resulting in only a partial data set for that night. I generally do not move a lot in my sleep.
The headband itself has a pretty nice construction. It’s made from a soft, stretchy, slippery fabric like performance athletic clothing and is lightweight overall. The headband’s design is not unlike a regular sports sweatband but with some electronics embedded inside: earpieces on each side for delivering sound into your ear and a secondary forehead band for one of the sensors. The forehead sensor strip is removable for cleaning, though none of the rest of the headband has removable parts. Since you can’t submerge the headband in water due to the electronics inside, washing it in the washing machine is out of the question and you’re limited to wiping it down with a damp cloth. I would have preferred the parts of it that come in direct contact with your skin and hair to be removable for washing. The second sensor consists of a disposable gel pad that you stick behind your right ear and snap onto a wire just under the right earpiece. I did find that upon removal, this sticky sensor left a tacky residue behind my ear that was difficult to clean off, even with soap, warm water, and scrubbing with a terry cloth.
The headband comes in two sizes: medium and large; I got the medium size as this supposedly fits most users. However, for me, it was not a comfortable product to wear nightly. I thought perhaps it was due to the size because I had the band expanded to the max and it was snug, though according to the manual this is appropriate as long as it is not overly tight, which I didn’t think it was. The headband also loosened up over time and by the end of the first week didn’t feel as tight, and I even needed to use the adjusters to make it smaller.
Since the headband goes over your ears, your ears are pressed flat against your head for the duration of the night. This actually bothered me a lot because I would wake up with pain and soreness at the back of my ears, akin to the feeling of wearing on-ear headphones or earmuffs for too long. The earpieces also prevented me from side-sleeping because the components inside the earflaps are somewhat hard, and I could feel them quite clearly when I slept against them. However, my discomfort was mainly due to the fact that the headband adjusts via two flat metal brackets (not removable) at the back of the headband.
I had the headband at the max circumference and the brackets sat right in the center at the back of my head. I get that they’re thin and lightweight and very durable, but so is Velcro, or silicone, or a whole host of other materials other than solid metal. Since I’m a back sleeper, this resulted in the brackets digging into the back of my head as soon as I put my head down. This was somewhat mitigated by changing from a feather pillow to a memory foam one, though it was still very palpable. I’m not normally aware of waking up at all during the night, and if I do I usually fall back asleep pretty quickly, but I noticed (and the sensors noticed) that I was waking up during the night more often when wearing the headband. This was particularly annoying because when I would wake, I was aware of how uncomfortable the headband felt and this kept me up, making it difficult for me to fall asleep again.
In the mornings I would wake up with a sore spot at the back of my head just under the where the brackets sat, due to the friction, pressure and abrasion they applied to my skin. That, coupled with the ear pain made this, albeit effective sleep booster, a poor user experience as a whole. I just didn’t want to use the product despite what it could do for me. I wore the headband nightly over the course of 14 days to see whether or not my opinion on this point would evolve over time, but it did not. I really wanted to like this smart sleep headband, and I felt like it really did improve the quality of sleep I got, when it was limited. But the experience of using it was, on a whole, not pleasant. I think the technology is great, and a few design changes could make this an amazing product as it would potentially put a few hours back into my day when I could really use it.