シミやそばかすをクリームできれいにできるのがトレチノイン・ハイドロキノンです。これを塗るだけでシミをなかったことにできることから、シミ取りするならこの方法と考えている女性は多いようです。
そもそもトレチノイン・ハイドロキノンでシミが消せるのはターンオーバーを強制するからです。トレチノインには肌のターンオーバーを強制する作用があります。シミというのは肌内部に残ったメラニン色素の残骸です。本来であればターンオーバーとともに徐々に肌上部に押し上げられて最終的に垢となって排出されるメラニンが、ターンオーバーが乱れることで肌内部に残ったままになることがあります。それがそのまま色素沈着したものがシミなのです。トレチノインはターンオーバーを促すことから、内部に残ったメラニン式の排出を促し、その結果シミが治るというわけです。
ただ、トレチノイン・ハイドロキノンを使った治療法は絶対にうまくいくとは限りません。それなりのリスクも伴うのです。
トレチノイン・ハイドロキノンのリスクとは
トレチノイン・ハイドロキノンのリスクとは、シミが治るどころか悪化したり、一回り大きくなる可能性がある点です。ターンオーバーを促すというと聞こえがいいですが、実際は皮がむけるわけです。皮がむけることでシミも一緒になかったことになるというわけです。もちろん皮がむけるといっても、厚くむけるわけではなく、例えるなら日焼けし過ぎたと時のような感じです。そのため治療中の見た目はよくないですし、肌は敏感になっているので扱いも慎重にならないといけません。ここで適当に扱うと、肌がダメージを受けてシミが悪化したり増える可能性があるからです。
またトレチノイン・ハイドロキノンのリスクとしてハイドロキノンによるアレルギーが考えられます。強い成分なので肌に合わずに炎症を起こすことがあります。皮むけの際の色素沈着を防ぐ目的で使用するハイドロキノンですが、肌に合わずに使っていると炎症が長引き、それが逆に色素沈着となり、シミが一回り大きくなることもあります。
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Understanding COSC Accreditation and Its Importance in Horology
COSC Validation and its Stringent Criteria
COSC, or the Controle Officiel Suisse des Chronometres, is the official Swiss testing agency that verifies the accuracy and accuracy of wristwatches. COSC certification is a mark of quality craftsmanship and dependability in chronometry. Not all watch brands seek COSC validation, such as Hublot, which instead sticks to its proprietary demanding standards with movements like the UNICO calibre, attaining equivalent accuracy.
The Art of Precision Timekeeping
The core system of a mechanical watch involves the mainspring, which provides energy as it loosens. This mechanism, however, can be vulnerable to environmental elements that may influence its accuracy. COSC-certified mechanisms undergo demanding testing—over fifteen days in various conditions (5 positions, 3 temperatures)—to ensure their resilience and reliability. The tests assess:
Average daily rate accuracy between -4 and +6 seconds.
Mean variation, highest variation rates, and effects of temperature changes.
Why COSC Certification Matters
For watch enthusiasts and connoisseurs, a COSC-accredited timepiece isn’t just a item of tech but a demonstration to enduring quality and accuracy. It symbolizes a watch that:
Offers excellent dependability and precision.
Offers assurance of quality across the complete design of the timepiece.
Is likely to maintain its worth better, making it a sound choice.
Popular Chronometer Brands
Several famous brands prioritize COSC validation for their watches, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, presents collections like the Archive and Spirit, which highlight COSC-validated mechanisms equipped with cutting-edge substances like silicone equilibrium suspensions to improve resilience and efficiency.
Historical Background and the Development of Timepieces
The idea of the timepiece originates back to the requirement for precise timekeeping for navigational at sea, highlighted by John Harrison’s work in the eighteenth century. Since the formal foundation of Controle Officiel Suisse des Chronometres in 1973, the accreditation has become a standard for judging the precision of high-end watches, maintaining a tradition of superiority in horology.
Conclusion
Owning a COSC-accredited timepiece is more than an visual selection; it’s a dedication to quality and precision. For those appreciating accuracy above all, the COSC accreditation provides peace of thoughts, guaranteeing that each validated watch will operate dependably under various conditions. Whether for individual satisfaction or as an investment decision, COSC-certified timepieces stand out in the world of watchmaking, maintaining on a tradition of meticulous chronometry.
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