Contemporary cosmetic products are developed around an implicit

neurotypical user model. This model assumes predictable sensory tolerance,

sustained attention, and reliable executive function. For a significant portion of the population,

these assumptions do not hold. As a result, many products impose unnecessary cognitive and

sensory load. Application becomes ambiguous. Sensory cues become misleading.

Routines are abandoned not because products fail chemically, but because they fail neurologically.

Neurodivergence represents a fundamental dimension of human variation. ADHD

and related neurodivergent profiles affect children and adults, diagnosed and undiagnosed,

across all demographics. These users are systematically underserved by products

that prioritise novelty, complexity, or performative claims over predictability and completion.

Product abandonment, inconsistent use, and consumer distrust are structural outcomes of this mismatch.

A routine performed consistently with tolerable effort delivers greater benefit

than a perfect routine performed once and abandoned.

NICD formalises this principle as a primary design constraint.

NICD is a technical framework that treats neurological accessibility as a core safety and performance parameter.

It requires:

•    Sensory predictability across time and batches

•    Reduction of cognitive and executive-function friction

•    Honest alignment between claims, cues, and experience

•    System-level design of formulation, packaging, and ritual