METHOD FOR CONTROLLING SHAPE OF SKIN

• Main Authors: KASAMATSU SHINYA, HANADA YOKO, IIDA MASAYUKI, TSUKAHARA KAZUE, MAEDA MIZUKI, YASU TOMOKO
• Format: Patent
• Language: English; Japanese
• Published: 01.12.2023
• Subjects: HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS

To provide a method for controlling a shape of skin.SOLUTION: Provided is a method for controlling a shape of skin after removing a composition comprising the following components (A) and (B): (A) a polymer whose deformation ratio measured by the following method (1) is 0.3 or more and 1 or less. In the method (1), a 10 mass% hexamethyldisiloxane solution of said polymer is prepared, and 0.005 g of the solution is applied to one side of a polyethylene sheet 20 mm wide×100 mm long×0.03 mm thick, 20 mm wide×50 mm long from one end of the short side in the longitudinal direction, and dried in a thermostatic bath set at 40°C for 10 minutes. The length of the polyethylene sheet in the area where the solution is applied is L1, the length of the polyethylene sheet in the area deformed by shrinkage after drying is L2, and the value L2/L1 is the deformation ratio. (B) A step of applying the composition multiple times topically and a step of removing the composition after each application are repeated such that a composition containing a volatile oil with a volatility of 14% or more after drying for 30 minutes at 40°C and 60% R.H. under 1 atmosphere is applied to the desired skin area for a period of 7 days or more, and the cumulative application time is 28 hours or more for the 7 days.SELECTED DRAWING: None 【課題】皮膚の形状を根本的に制御する方法を提供する。【解決手段】次の成分（Ａ）及び（Ｂ）：（Ａ）下記方法（１）により測定される変形割合が０．３以上１以下であるポリマー、方法（１）：前記ポリマーの１０質量％ヘキサメチルジシロキサン溶液を調製する。該溶液０．００５ｇを、幅２０ｍｍ×長さ１００ｍｍ×厚さ０．０３ｍｍのポリエチレンシートの片面に、短辺の一端から長さ方向に向けて幅２０ｍｍ×長さ５０ｍｍの範囲に塗布し、４０℃に設定した恒温槽中で１０分乾燥させる。前記溶液を塗布した部分のポリエチレンシートの長さをＬ１、乾燥後に収縮により変形した部分のポリエチレンシートの長さをＬ２とし、Ｌ２／Ｌ１の値を変形割合とする。（Ｂ）１気圧下、４０℃、６０％Ｒ．Ｈ．で３０分乾燥後の揮発率が１４％以上である揮発性油を含有する組成物を、目的とする皮膚の領域に、７日間以上の期間、７日間の累積適用時間が２８時間以上になるように、局所的に複数回適用するステップと、適用後、適用毎に組成物を除去するステップとを、繰り返すことを特徴とする、組成物除去後の皮膚の形状を制御する方法。【選択図】なし