Because using condoms is the simplest and easiest contraceptive method to master, some people think that using condoms is self-taught, with not much expertise involved. In fact, there are indeed people who do not know how to correctly use condoms, resulting in condom breakage or slippage during intercourse. Both of these are causes of contraceptive failure. To use condoms correctly, the following four points should be noted:
1. Upon obtaining a condom, first check the production batch number printed on the packaging. The batch number is usually represented by 6-8 digits, from left to right respectively representing year, month, day, and the batch number of the day. This can be used to determine the production date and calculate the expiration date. The storage period under normal temperature should not exceed one and a half years. If stored for too long or under poor conditions, it will affect its tension and strength.
2. After the penis becomes erect, gently squeeze the top of the condom's sperm reservoir to expel the air inside, then place it over the glans. During the process of unrolling the condom towards the base of the penis with the fingertips of your index, middle finger, and thumb, it may tear due to nail scratches. Therefore, it is essential to trim your nails before having sexual intercourse with a condom.