An LED mask is now one of the most common things in an Australian bathroom cabinet that nobody can tell you the results of.
The devices sell for a few hundred dollars. The instructions ask for around ten minutes a day, most days, for several months before you assess anything.
That is a long time to run on faith. It is also long enough that most people quietly stop, or keep going without ever deciding whether it did anything.
The research is more interesting than the marketing
A multicentre, randomised, double-blind trial tested a home-use LED neck device against a sham device in 70 participants (Park et al., J Cosmet Dermatol 2025;24(1):e16599). Participants used it nine minutes a day, five days a week, for sixty sessions.
Improvement in the study group reached statistical significance at weeks 8, 12 and 16. Nothing meaningful separated the groups before then.
Worth noting the study looked at the neck rather than the face, in an Asian population, using one specific device. It is not a verdict on every mask on the market.
But one finding in it should change how anyone shops for this category.
The participants could not see what the investigators measured
Both the investigators and the participants rated results on the same measure, the Global Aesthetic Improvement Scale. The investigators recorded a significant difference at weeks 8, 12 and 16.
The participants, rating their own necks, did not.
The change was measurable enough for trained observers to agree on it, and invisible to the person who had shown up for sixty sessions.
