The barrier to permeation is charge and effective hydrodynamic radius rather than raw mass, which is what the cited Hostynek and Li data actually show
Many companies use "window dressing"adding a tiny amount of an ingredient just so they can put it on the label, even if that amount isn't enough to be effective
Low glutathione has also been associated with the retention of potentially toxic minerals such as
Multisystem inflammatory syndrome in an adult
Attenuates body mass gain, adipocyte size, and hepatic steatosis in HFD-fed C57BL/6 mice via chemotaxis inhibition, reducing ATM recruitment while increasing CD206 + M2 polarization [175]
doi:10.1056/NEJMoa2032183 Yabe D, Nakamura J, Kaneto H, et al