Abstract:

Electroencephalography （EEG） is a macro-electrophysiological phenomenon manifested by the collective charging and discharging of brain nerve cell clusters in the cerebral cortex, and it is the most intuitional manifestation of human brain activity. The EEG test was used to understand the variation in brain activity during the application of the facial mask, thus to study the psychological impact of the facial mask applied on consumers. During the EEG data acquisition process, 1 min of EEG data for the subjects were recorded as baseline before being applied with a facial mask, and 0-7 min of EEG data were also recorded as test data after putting on the facial mask. The results indicate that applying facial mask can stimulate the low-frequencyθ rhythm （4-8 Hz） and slightly reduce the high-frequency β rhythm （14-30 Hz）. The subjects’ relaxation indexes are improved with different facial masks, which is consistent with the subjective evaluation results and heart rate measurement results of the subjects. It can be ascribed to the facial mask contributing to mental relaxation of consumers. This study shows the mental relaxation state of consumers during the facial mask application as revealed by EEG analysis, which has illustrated the psychological impact of cosmetics on consumers from the perspective of neuroscience. It is of important significance to reveal the psychological correlation of consumers with cosmetics.

Key words: EEG, θ rhythm, β rhythm, relaxation index, facial mask