Two posts in one day!
How does MakeSense adapt to up to 3 shades?
Adjusting foundations and cosmetics use one of two technologies: pH reactive or color encapsulation.
MakeSense does not use color encapsulation (as far as we can tell) as this involves coating a pigment in a moisturizer, usually an oil or a wax and it goes on clear or white and as you rub and apply, the sudden appearance of pigment as these capsules burst, gives the illusion of a sudden adaptation of color over the translucent initial application.
A pH reactive formula uses a base pigment (which still performs the best if you match this tone via neutral vs warm vs cool determination) and that reacts to the presence of alkaline or acid conditions on the skin and changes the shade of this pigment. The environment can also affect this or even moisture on your skin due to the environment can change this, so while it can adjust and be appropriate for a few shades, it isn’t actually covering an entire range, just has the ability to adjust a few hues or shades. This technology is also employed in blushes and lip colors out there being marketed as “changing with your mood.”
The formula of MakeSense contains Iron oxides as well as Titanium dioxide as the main pigment components, and the Iron Oxide will see the most flux in oxidation due to environmental conditions and pH.
https://patents.google.com/patent/US5690916A/en (interesting take on using mica to compound this effect for coverage of other conspicuous items) and while there aren’t any scholarly articles popping up on this technology getting down to the nitty-gritty science of it, there is a mainstream overview article that was referenced https://www.self.com/story/skin-matching-makeup-how-it-works
https://pp.bme.hu/ch/article/download/194/89/ Iron Oxides