The Neurocognition Index (NCI) is calculated based on five tasks: memory, psychomotor speed, reaction time, complex attention, and cognitive flexibility
J Invest Dermatol 142(1):212219
Even in trials that showed a benefit, not every participant responded the same way, and the effect was modest tone-evening not a fundamental colour change
Gremmel T, Frelinger AL 3rd, Michelson AD
In comparison, the IV drips takes longer as it relies on gravity, although the dosage rate can be controlled more minutely by monitoring the drops per minute
Hyperpigmentation can stem from various factors, including sun exposure, hormonal changes, and inflammation