The discoloration or fading of gold jewelry is closely related to human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as: chloride, lactic acid, urea, urea ammonia, etc. After contacting the silver and copper in gold jewelry in gold jewelry, chemical reactions will produce silver chloride and copper sulfide, and show dark black chemical salt. This kind of chemical salt often falls from gold jewelry, polluting the wearer The skin leaves the skin with obvious black stains.
This is the phenomenon of oxidation, which is related to the unclean environment, and the impact of purity problems. Wipe it on the cotton cloth with toothpaste. The effect is very good.
Pay content for time limit to check for freenAfter a long time of answering, gold jewelry has no shiny daily wearing or environmental factors that can make gold jewelry lose a bright color. For example: dry areas, the air contains more minimum dust. After the human body is contaminated, it will form a "human sandpaper". It can wear gold jewelry to erode very slight debris and local black stains. 2. The cause of gold jewelry to become black and harmful substances, chlorine substitutes, lactic acid, urea ammonia, etc. in the human body, which will generate chemical reactions with silver and copper in gold jewelry, produce dark black silver chloride and copper sulfide, and copper sulfide. This kind of chemical salt sometimes falls from gold jewelry, and will also pollute the skin of the wearer, leaving very obvious black stains ...nThe question of the question becomes black, what is going onnCan sexual lifenAnswer you are talking about semen, right?nQuestion rightnAnswer first go to the hospital for examination, you may bleed bleedingnIf you do sex in this way, it may be harmful to the bodynIs there any way to ask questions?nAnswer treatment must be treated, but if you do not go to the hospital for examination, the wound may become bigger and bigger.nQuestion semen is very darknThe answer is probably caused by the bleeding inside. It is recommended to go to the hospital to check itnQuestionnYou should pay attention to time, not dragnMore 11nBleak
The discoloration or fading of gold jewelry is closely related to human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as: chloride, lactic acid, urea, urea ammonia, etc. After contacting the silver and copper in gold jewelry in gold jewelry, chemical reactions will produce silver chloride and copper sulfide, and show dark black chemical salt. This kind of chemical salt often falls from gold jewelry, polluting the wearer The skin leaves the skin with obvious black stains.
This is the phenomenon of oxidation, which is related to the unclean environment, and the impact of purity problems. Wipe it on the cotton cloth with toothpaste. The effect is very good.
Pay content for time limit to check for freenAfter a long time of answering, gold jewelry has no shiny daily wearing or environmental factors that can make gold jewelry lose a bright color. For example: dry areas, the air contains more minimum dust. After the human body is contaminated, it will form a "human sandpaper". It can wear gold jewelry to erode very slight debris and local black stains. 2. The cause of gold jewelry to become black and harmful substances, chlorine substitutes, lactic acid, urea ammonia, etc. in the human body, which will generate chemical reactions with silver and copper in gold jewelry, produce dark black silver chloride and copper sulfide, and copper sulfide. This kind of chemical salt sometimes falls from gold jewelry, and will also pollute the skin of the wearer, leaving very obvious black stains ...nThe question of the question becomes black, what is going onnCan sexual lifenAnswer you are talking about semen, right?nQuestion rightnAnswer first go to the hospital for examination, you may bleed bleedingnIf you do sex in this way, it may be harmful to the bodynIs there any way to ask questions?nAnswer treatment must be treated, but if you do not go to the hospital for examination, the wound may become bigger and bigger.nQuestion semen is very darknThe answer is probably caused by the bleeding inside. It is recommended to go to the hospital to check itnQuestionnYou should pay attention to time, not dragnMore 11nBleak