Skincare tools like LED masks and cleansing devices are increasingly shipping with sensors and companion apps.
Skincare tools are catching up to fitness wearables in how much they track.
The added data lets users track changes over weeks or months, rather than relying on how their skin simply feels day to day.
Routines stick better when guidance replaces guesswork.
As with fitness trackers, the value depends heavily on whether people actually use the data to adjust their routine.
