Mekanis nan oksidasyon squalene bay manti nan ki peryòd ki ba li yo papòt ionization ka bay oswa resevwa elektwon san yo pa domaje estrikti a molekilè nan selil yo, ak squalene ka mete fen nan reyaksyon an chèn nan idroperoksid nan chemen an peroksidasyon lipid. Studies have shown that the peroxidation of sebum is mainly caused by singlet oxygen, and the singlet oxygen quenching rate constant of squalene in human sebum is much larger than that of other lipids in human skin. disparisyon konstan. However, it should be noted that although squalene can block lipid peroxidation, the products of squalene, such as unsaturated fatty acids, also have an irritating effect on the skin.
Squalene oksijene ka jwe yon gwo wòl nan patojenèz la nan akne. In animal experimental models, it has been established that squalene monoperoxide is highly comedogenic, and the content of squalene peroxide gradually increases under UV irradiation. Therefore, it is suggested that acne patients should pay attention to sun protection, and sunscreens can avoid squalene peroxidation at physiological concentrations caused by ultraviolet rays.
Analyzer Poka itilize yo detekte efè a nan krèm solèy la. Se imaj la UV yo montre ble fonse si krèm pwotèj kont solèy chimik se aplike; Si se krèm pwotèj kont solèy fizik, imaj la se meditativ, menm jan ak rezidi fliyoresan.
Post tan: Apr-29-2022
