PROBLEM TO BE SOLVED: To provide a nail strengthening agent, which solves the problem that any conventional nail care products cannot continuously strengthening the nail.SOLUTION: After replenishing keratin, which is the main component of the nail, cationization and oxidation treatment at pH 4.4 are carried out to change the water-soluble keratin into sparingly soluble so as not to flow out of the nail. Then, when heat is applied with a dryer, keratin undergoes protein denaturation and its molecular weight increases. The keratin can therefore remain in the nail.COPYRIGHT: (C)2017,JPO&INPIT【課題】従来の爪ケア製品には持続的に爪を強化しうる製品がなかった。【解決手段】爪の主成分であるケラチンを補充した後、カチオン化及びpH4.4の酸化処理を行うことで、水溶性ケラチンを難溶性に変化させ、爪から流出しないようにさせる。その後ドライヤーで熱を加えると、ケラチンは蛋白変性を起こし分子量が増大する。それにより、さらにケラチンは爪内に留まることができる。
