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The Scalp Has a Lower Stratum Corneum Function with a Lower Sensory Input than Other Areas of the Skin Evaluated by the Electrical Current Perception Threshold

Kao Corporation, R&D, 2-1-3 Bunka, Sumida-ku, Tokyo 131-8501, Japan
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Academic Editor: Enzo Berardesca
Cosmetics 2015, 2(4), 384-393; https://doi.org/10.3390/cosmetics2040384
Received: 30 September 2015 / Accepted: 17 November 2015 / Published: 20 November 2015
Many people feel frequent prickling or itching sensations on their scalp. The scalp is an atypical area of the skin since it is normally covered with thick hair and has many sebaceous glands and sweat glands. The scalp often has skin problems that can affect its sensitivity and functions. However, not much is known about stratum corneum function and the neural sensitivity of the scalp. Here we evaluated stratum corneum function and the neural sensitivity of the scalp of 47 normal male individuals in various skin conditions and compared the results to that to the forehead. The neural sensitivity was evaluated by measuring the electrical current perception threshold (CPT). The cutaneous barrier function and stratum corneum moisture-retention ability (MRA) of the scalp were significantly lower than on the forehead, even if there were some scalp problems. Depending on the increase in severity of scalp skin problems, both these skin functional properties and the CPT decreased significantly. However, regardless of its lower functional properties, scalp skin was not significantly lower than that of the forehead. Although the scalp has a low stratum corneum function compared with the forehead and has easily induced skin problems, the scalp skin has less sensitive sensory nerves, resulting in experiencing a worsening of scalp symptoms more easily. View Full-Text
Keywords: scalp skin; stratum corneum; current perception threshold; forehead scalp skin; stratum corneum; current perception threshold; forehead
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MDPI and ACS Style

Takagi, Y.; Takatoku, H.; Terazaki, H.; Nakamura, T.; Ishida, K.; Kitahara, T. The Scalp Has a Lower Stratum Corneum Function with a Lower Sensory Input than Other Areas of the Skin Evaluated by the Electrical Current Perception Threshold. Cosmetics 2015, 2, 384-393. https://doi.org/10.3390/cosmetics2040384

AMA Style

Takagi Y, Takatoku H, Terazaki H, Nakamura T, Ishida K, Kitahara T. The Scalp Has a Lower Stratum Corneum Function with a Lower Sensory Input than Other Areas of the Skin Evaluated by the Electrical Current Perception Threshold. Cosmetics. 2015; 2(4):384-393. https://doi.org/10.3390/cosmetics2040384

Chicago/Turabian Style

Takagi, Yutaka, Hiroko Takatoku, Hiroyuki Terazaki, Tadashi Nakamura, Koichi Ishida, and Takashi Kitahara. 2015. "The Scalp Has a Lower Stratum Corneum Function with a Lower Sensory Input than Other Areas of the Skin Evaluated by the Electrical Current Perception Threshold" Cosmetics 2, no. 4: 384-393. https://doi.org/10.3390/cosmetics2040384

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