| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a collagen sheet suitable for cosmetic use prepared when needed which has thin thickness, high solubility for water, and high mechanical strength for handling with tweezers.SOLUTION: A water soluble collagen sheet is formed by freeze-drying solubilized collagen solution containing salts and compressing the obtained porous collagen. The dissolution rate after one minute of spraying distilled water (25°C) 30 times or more in mass as much as the water soluble collagen sheet is 95% or more.</p> |
