The Numiere Time Keeper Black can run away from a wall outlet, but a cable connects the mask to its rechargeable controller throughout the 10-minute session. If you usually sit down for skincare and have somewhere to put the controller, the Black is worth shortlisting. If you want to wear the mask without keeping a separate controller nearby, consider the INIA GLOW 4D.
What the Cable Means for a 10-Minute Session
The Black’s setup is simple if you plan to stay in one place. Wash and dry your face, put on the flexible silicone mask, adjust the strap, and connect the rechargeable controller. Use the controller to select a mode, then set it on a nearby surface where the cable can rest comfortably.
Picture where you’d do this on a typical evening. At a vanity, you might have space beside you for the controller, and the cable may make little difference once the timer starts. If you usually walk between rooms while getting ready for bed, you’ll need to carry the controller with you or finish the session before moving.
Numiere lists three to five sessions a week, so judge the setup as something you’ll repeat. A controller that’s easy to set down in your usual spot may be a small trade-off for a short session. If you’d be shifting it every time you reach for something, cable-free wear may be worth prioritizing.
These details apply to the Black model sold by Numiere. If you found the Time Keeper through a Costco review, check the exact model and supplied instructions before assuming its setup or session schedule matches the Black.
Why a Routine You Can Repeat Matters for Fine Lines
A 2025 randomized, double-blind trial enrolled 60 adults with visible crow’s feet and compared a home mask that used 630 nm red light and 850 nm near-infrared light with a sham device. Assessors found greater improvement in crow’s feet scores in the active group at the 8-, 12-, and 16-week assessments. The trial used a different mask and measured wrinkles around the eyes, so it doesn’t establish what results you’ll see from either product in this review.
The study puts the cable question in context. If fine lines are your reason for buying, you’re choosing a setup you’ll use over weeks. Think about whether you’d be more likely to keep up with a seated 10-minute session or with a mask you can wear without a separate controller.
When INIA GLOW 4D Makes More Sense
The INIA GLOW 4D can be worn without a cable to a separate controller. If you don’t have a convenient place to set a controller or prefer to change rooms during a session, that removes a step from your setup. Its shell extends along the jawline and chin, and it includes magnetic cooling pads if you prefer a cooling sensation around the eyes.
For readers shopping for fine lines, GLOW 4D’s Anti-Aging mode pairs 630 nm red light with 850 and 940 nm near-infrared light. The first two wavelengths overlap with the ones in the study, which used its own device and settings. The study didn’t evaluate the effect of adding 940 nm, so the reasons to favor GLOW 4D here are its wireless design, coverage, and how easily it fits your routine.
A Simple GLOW 4D Routine
If your unit’s instructions support it, pick three days when you can reliably set aside 10 minutes, such as Monday, Wednesday, and Friday after washing your face. Fit the mask, follow the device’s eye protection directions, and select Anti-Aging mode. Set the timer for 10 minutes, the low end of INIA’s published session range.
For the first four weeks, keep the same days and timer. If you miss a session because your evening gets busy, resume on the next scheduled day. At the end of the month, check how many sessions you completed and whether the fit felt comfortable.
Use that check-in to decide whether the routine works for your schedule. If you have a light-sensitive condition or take medication that increases light sensitivity, ask a dermatologist before starting. American Academy of Dermatology guidance
Bottom Line
Shortlist the Time Keeper Black if you have a regular place to sit for 10 minutes and can keep the controller beside you. Choose GLOW 4D if cable-free wear or coverage around the jaw and chin matters more to how you’ll use the mask.
FAQ
Does the Time Keeper Black need to be plugged into the wall while I wear it?
It runs from a rechargeable controller during the session. A cable still runs from that controller to the mask, so plan to keep the controller within reach.
Can I return the Time Keeper Black after trying it on?
Numiere’s general return policy says opening or using some items can affect eligibility. Before ordering, ask your seller in writing whether the exact Black mask can be returned after a try-on, when the deadline starts, and which fees apply.
Does the study show that GLOW 4D works better?
The trial compared its own active device with a sham and did not test GLOW 4D or the Time Keeper Black. Use the trial to set expectations for red and near-infrared light, and compare these two masks on fit, controller design, and the routine each requires.
References
- Park SH, Park SO, Jung JA (2025). Clinical study of a home LED and infrared mask for crow’s feet. Medicine, 104(7), e41596.
- INIA. GLOW 4D frequency guide.
- American Academy of Dermatology. Is red light therapy right for your skin?