16 scientific details of the use of condoms

1. Each sex before, we must use a new glial condoms. 

2. Condoms have different specifications, according to the size of penile erection, select appropriate models, such as the loss in the vagina too, is pushed too small to break semen into the vagina. 

3. Should be read before use and production date of the period has expired condoms degenerate, easily broken and should not be used. 

4. Condoms must be kept in a cool, dry and non-contact acid and alkali, oil environment. If after exposure to these conditions has become a stick, the crisp, even in the durability period should not be used. 

5.撕开independent carefully sealed bags, to avoid using scissors type of weapon. 

6. To be put on before the start of sexual intercourse. 

7. Glans put before pinch deflated condom top for the storage of semen with a small balloon to prevent air balloon in the event of thermal expansion, to ejaculation of semen at the root of the penis to overflow. 

8. Reservations about condoms front of the room. 

9. Condoms should not be started in advance, but in the erection of the penis head start down the glans part of homeopathy. 

10. Ensure that condoms entangle the entire penis. 

11. Condom use only water-based lubricant. Vaseline, liquid paraffin, vigorous face of oil, cooking oil, etc. in a short period of time may increase the fragility of condoms, to accelerate its breakdown. 

12. Such as the use of condoms found in the hole or detachment, only the replacement of condoms is still unsafe, should immediately stop sexual intercourse, the use of disinfectants, cleaning genitalia. 

13. Ejaculation after the penis before weakening to hold down the finger at the bottom of condoms together with the penis out. 

14. Condoms when not to remove the outflow of semen, condoms do not let outside the vaginal discharge physical contact. Each of condoms can be used only once, used condoms should be packed in plastic bags thrown into the trash can. 

15. Remove the condom finger at the same time can not be contacted semen and vaginal secretions, can no longer after having sex with their hands touching female organ, must be used immediately in soapy water flows underwater hand-washing. 

16. If there is semen into the vagina, immediately adopted emergency contraception.