Ann Dermatol.  2019 Jun;31(3):307-314. 10.5021/ad.2019.31.3.307.

The Relationship between Epidemiologic Factors and Usage Pattern of Hair Care Products in Korea

Affiliations
  • 1Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea.
  • 2Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea. ivymyung@dankook.ac.kr
  • 3Skin Research Institute, IEC Korea, Suwon, Korea.
  • 4Data Computational Sciences, Division of Applied Mathematical Sciences, College of Science and Technology, Korea University, Sejong, Korea.
  • 5Department of Pharmacy, College of Pharmacy, Dankook University, Cheonan, Korea.
  • 6Department of Dermatology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
  • 7Department of Biomedical Engineering, College of Medicine, Dankook University, Cheonan, Korea.

Abstract

BACKGROUND
For hair care products that are used almost everyday, it is important to estimate the cumulative dosage of long-term exposure and to assess the effects on the human body. Little data are available to evaluate actual daily usage in Asian populations.
OBJECTIVE
Reliable exposure data for hair care products is essential to conduct safety assessments.
METHODS
We evaluated the actual usage pattern and amounts by checking the daily log over a 2-week period, to obtain all the data regarding the participants' hair care preferences. And, statistical analyses were conducted to analyze the daily use amount (g/d) and daily usage per hair length (g/cm/d), and other variables by sex, age group, and hair oiliness.
RESULTS
Throughout this study, we found that female users consumed significantly larger daily amounts of shampoo and rinse. Male groups used more hair gel and spray than female groups. Interestingly, all the hair care products studied scored higher levels of usage among men when calibrated per unit length. Koreans tend to use lesser amount of rinse although their hairs are usually thicker than the Western hairs.
CONCLUSION
This study provides exposure information for commonly used hair care products, which will be useful for risk assessment purposes.

Keyword

Exposure assessment; Hair care product; Korean usage; Usage patterns
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