Journal of Cosmetics, Dermatological Sci... > Vol.4 No.4, September 2014

Mika Oshima¹, Maiko Sogawa¹, Hiroshi Matsunaka², Yumi Murakami², Yumiko Saya², Takashi Sugita³, Yoshihiro Matsudate¹, Nozomi Fukui¹, Kazutoshi Murao¹, Yoshiaki Kubo^1*

¹Department of Dermatology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan.
²Tokiwa Pharmaceutical Co., Ltd., Tokyo, Japan.
³Department of Microbiology, Meiji Pharmaceutical University, Tokyo, Japan.

Introduction: Appropriate skin care for dry scalp includes treatment for dandruff and itchiness. However, little is known about the appropriate washing methods for subjects with dry scalp. Me- thods: A scalp moisturizing lotion was used for 8 weeks on 30 outpatients at the Tokushima University Hospital who had dry scalp. All subjects were given the same hair shampoo/conditioner and instructions on how to wash their hair. Scalp symptoms were observed before and after the testing period. Indigenous bacteria were collected from the scalp for quantitative assessment. A survey was conducted to assess the quality of life (QOL). Results: All scalp condition items (dryness, scales and desquamation, itchiness, excoriation, and erythema) improved significantly after the testing period; the levels of Malassezia and bacterial colonization also decreased significantly. The QOL evaluation indicated significant improvements in “symptoms”, “emotions”, and “global” measures. A correlation was found between the extent of dryness at the start of the test and the level of Malassezia colonization, as well as QOL scores. Conclusion: Using a scalp moisturizing lo- tion, washing hair with a shampoo and conditioner that cause low irritation levels, and using a hair washing method that avoids irritation led to improvement in scalp condition, QOL, and pa- tient satisfaction.

Atopic Dermatitis, Seborrheic Dermatitis, Moisturizer, Malassezia, Bacteria, qPCR

Oshima, M. , Sogawa, M. , Matsunaka, H. , Murakami, Y. , Saya, Y. , Sugita, T. , Matsudate, Y. , Fukui, N. , Murao, K. and Kubo, Y. (2014) Improvement of Scalp Condition and Quality of Life through Proper Skin Care of Dry Scalp. Journal of Cosmetics, Dermatological Sciences and Applications, 4, 284-292. doi: 10.4236/jcdsa.2014.44038.