Hair Shine Evaluation

This study used the OPIX System to evaluate how a leave-on hair oil affects colour and shine across black, brown, and blond hair swatches. Each swatch was mounted on a semi-cylindrical backing to replicate the natural curvature of hair, allowing gloss behaviour to be captured in a single measurement under realistic conditions.

Colour Stability Across all three hair types, treated swatches showed no meaningful shift in lightness or chromaticity compared to untreated controls. The formulation leaves the hair's natural colour visibly undisturbed, confirming a non-staining, colour-safe profile.

Shine Performance Gloss intensity rose substantially after treatment, with the effect most pronounced on darker hair and more modest on blond hair. This pattern may be linked to how the oil could fill microscopic surface irregularities in the hair cuticle, potentially smoothing it into a more uniform reflective layer. This shift, possibly from diffuse toward more specular reflection, could explain the brighter shine band observed, an effect that may appear more pronounced against darker, melanin-rich strands than against lighter hair, where internal light scattering could already be contributing to natural brightness.

Gloss distribution and coverage area remained consistent between treated and untreated swatches, as these properties are governed by the swatch's fixed mounting geometry rather than the surface coating itself.

In Summary The oil enhances shine intensity without altering hair colour, with the visual impact varying naturally by hair shade.

This study used the OPIX System to track how a

layeredcosmetic routine affects colour and gloss

on a porous, textured synthetic skin plate. The

routine was applied and measured in sequence:

cream alone, then liquid foundation layered on top

of the cream, and finally setting powder layered on

top of both. Each stage therefore reflects the

cumulative effect of all products applied up to that point,

captured in a single measurement per step.

Colour Progression

The cream-only stage showed little change from the plate's baseline colour. Once foundation

was layered on top, lightness rose sharply while redness and yellowness shifted further from

baseline, a pattern that may suggest an opaque, pigmented layerincreasingly covering the underlying surface. With setting powder

added on top of both previous layers, these values moved back partway toward baseline, suggesting the powder may soften the

foundation layer's strong optical presence rather than reinforcing it.

Shine Progression

Gloss intensity stayed consistently high and largely unchanged across all three cumulative stages, which may reflect the presence of

fine reflective mineral particles in the foundation and powder formulas acting as small individual reflective points, even as the overall

finish appears more matte. Gloss distribution remained fairly stable throughout.

Gloss coverage area, by contrast, declined steadily and substantially as each layer was added. This may be because the cream alone

initially forms a broad, continuous film over the skin's texture, while adding foundation begins to break up that film with pigment

particles, and adding setting powder on top appears to further disrupt it into a fine, textured surface. The result could be a

progressive shift from light bouncing off one large reflective sheet to bouncing off many isolated micro-points, which may help explain

the routine's overall mattifying effect as layers accumulate.

In Summary

As the routine builds layer by layer, colour coverage appears to increase and then partially normalise, while the visible spread of shine

progressively narrows, even as peak reflective brightness remains largely unaffected throughout.

Skins Evaluation