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Retinyl palmitate containing liquid crystal emulsion for improved perc…

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작성자 : 생물의소재공학 날짜 : 작성일14-12-02 11:47 조회 : 959회

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■ Skin barrier
 protection skin from harmful alien substances
 prevention skin from loss of moisture
 composition: corneocyte and intercellular lipid
  - corneocyte : existing at stratum corneum
  - intercellular lipid
    →composition of ceramide, cholesterol,
        and free fatty acid
    → filing of spaces between corneocytes
    → lamella structure

■ Liquid crystal (LC)

A state has property between solid and liquid.
Highly anisotropic fluids.

 Liquid crystal protects retinyl palmitate from oxidation in aquous phase.
Multi lamella structure with LC has similar form
      with stratum corneum.
  → It can be diffused well through the stratum corneum.
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