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One of the most important problems that human beings have faced from the beginning is premature ejaculation and lack of sexual power in some people. in order to use these gels, first the man's hand or penis is impregnated with this gel and then it is massaged by hand.this is enough to transmit the germs and bacteria from the palm of the hand to your sexual partner which increases the risk of sexually infections.this reduces sexual health and increases the incidence of cervical diseases in women.the user first places the penis at the entrance of the donut-shaped cavity, then by pressing the cavity reservoir,the gel comes out without use hand.
Islamic Azad University Of Tehran
Central branch Faculty Of Art
Islamic azad university - Tehran central branch - Faculty of art
Amir hossein Naderzadeh Mehrabani,
Islamic azad university - Tehran west branch