Author

Koyo Koizumi

Institution: Shiseido Group (Japan)

Observed institution: Shiseido Group (Japan)

ORCID: 0000-0002-4034-0937

Observed ORCID: 0000-0002-4034-0937

OpenAlex ID: A5033289075

Reliability of Online Surveys in Investigating Perceptions and Impressions of Faces

2021 · Naoyasu Hirao, Koyo Koizumi, et al. · Frontiers in Psychology · 19

Changes in facial moisture distribution and feelings of moisture/dryness among various environmental temperatures and humidities in summer and winter

2020 · Mariko Egawa, Koyo Koizumi, et al. · Skin Research and Technology · 8

Effects of mild psychological stress on facial impressions

2023 · Koyo Koizumi, Naoyasu Hirao, et al. · Frontiers in Psychology · 4

Gravitational effects on the hydrogen bond network of water and ionic solutions revealed by near infrared spectroscopy under simulated microgravity

2026 · Mika Ishigaki, Koyo Koizumi, et al. · Scientific Reports · 1

Simulated intra-individual skin color changes and their impact on facial attractiveness across Japanese, Chinese, and Caucasian faces

2025 · Koyo Koizumi, Megumi Nagashima, et al. · Frontiers in Psychology · 1

Works count: 5

Citation count: 33

H-index: 3

I10-index: 1