The purpose of the study was to investigate the effects of sea cucumber extract on skin as a natural cosmetics functional material. Subjective evaluation of cosmetics before and after were conducted with questionnaires regarding moisture content, sebum content, melanin index, and erythema index. Experiments were conducted on improvement efficacy using skin clinical trials and questionnaires to evaluate changes in perception of skin condition and efficiency of products. With the aim of minimizing skin irritation, the efficiency of the solvent used for extraction was an important factor, and the sea cucumber extract was harvested with efficient extraction conditions at a ratio of 1:10 of 50% ethanol. The study aimed to identify the suitability of sea cucumber extract as a functional cosmetics material to improve the moisturizing ability of skin and its effect on the skin by adding marine natural animal sea cucumber extract. Clinical studies on cosmetics skin containing sea cucumber extract, excellent skin improvement effect from all items of clinical experiment in experimental and control groups. Sea cucumber extract was proved to be a stable, non-adverse physiologically active substance against abnormal symptoms or side effects of skin reactions and skin problems. In addition, the study found excellent results that can lead to its use as a cosmetics material. This is expected to contribute to the development of various cosmetics industries.

Abstract
 1. Introduction
 2. Experiment
  2.1. Questionnaire
  2.2. Clinical experiment
 3. Results and discussion
  3.1. Verification of homogeneity of facialskin
  3.2. Measurement results of moisturecontent of facial skin
  3.3. Measurement results of sebumcontent of facial skin
  3.4. Measurement results of melaninindex of facial skin
  3.5. Measurement results of erythemaindex of facial skin
  3.6. Subjective evaluation results ofcosmetics before and after use bysubjects through questionnaire
 4. Conclusion
 References

• Yong-shin Kim(Department of Bioengineering, Konkuk University)
• Ji-sun Moon(Department of Medical Beauty Care, Jungwon University) Corresponding author