초록

Many commercial semi-permanent eyebrow cosmetics differ in guaranteed durability versus durability observed during practical use. The current study tests the impact of adjusting pH levels using citric acid and sodium citrate on the length of time the colorant of eyebrow cosmetics will persist. Experimental samples were developed at three different pH levels, 5.0 (A), 4.0 (B), and 3.0 (C) and distributed to 30 healthy, non-pregnant Korean women aged 25-39 years. The semi-permanent eyebrow samples were applied 3 times to the volunteer’s right upper arm (size; 2×2 cm) using a color cosmetics brush. Changes in the colorant were monitored for seven days using a spectrum colorimeter. Results of the colorimeter study find that sample B and sample C had the greatest long-lasting effect, indicating that alteration of pH is effective at enhancing durability. These findings suggest that adjustment of pH provides a new methodology to improve the durability, quality and technological preparation process of semipermanent eyebrow cosmetics.

키워드

Color cosmetic, Durability, Eyebrow, pH, Semi-permanent

참고문헌(12)open

  1. [학술지] Blaak J / 2017 / A plant oil-containing pH 4 emulsion improves epidermal barrier structure and enhances ceramide levels in aged skin / Int J Cosmet Sci 39 : 284 ~ 291

  2. [기타] / 1976 / EU cosmetics regulations and registration: The approximation of the laws of the member states relating to cosmetic products / EU Cosmetics Directive 76/768/EEC, OJ L 262 : 27

  3. [인터넷자료] FDA / Part 700-color additives and cosmetics

  4. [보고서] KFDA / 2013 / Korea food and drug administration regulations

  5. [학술지] 김정희 / 2015 / Preparation & Verification of Color Cosmetic Containing Natural Indigo / 한국미용학회지 21 (4) : 706 ~ 709

  6. [학술지] 김선영 / 2008 / 천연염료를 이용한 색조화장품에 관한 고찰 / 한국미용학회지 14 (1) : 106 ~ 113

  7. [학술지] Eunmi Lee / 2011 / Smart delivery system for cosmetic ingredients using pH-sensitive polymer hydrogel particles / Korean Journal of Chemical Engineering 28 (6) : 1347 ~ 1350

  8. [학술지] Li N / 2012 / Effect of ionization and vehicle on skin absorption and penetration of azelaic acid / Drug Dev Ind Pharm 38 : 985 ~ 994

  9. [학술지] Melgosa M / 2018 / Colour differences in Caucasian and oriental women's faces illuminated by white light-emitting diode sources / Int J Cosmetol 40 : 244 ~ 255

  10. [학술지] Nadal ME / 2011 / Statistical methods for analyzing color difference distributions / Color Res Appl 34 : 160 ~ 168

  11. [학술지] Vaidyanathan R / 1985 / Effect of pH and solubility on in vitro skin penetration of methotrexate from a 50% v/v propylene glycol-water vehicle / Int J Pharm 25 : 85 ~ 93

  12. [학술지] Wiechers JW / 2006 / Formulating for fast efficacy / J Cosmet Sci 57 : 191 ~ 192