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This a medical procedure that helps to revive, improve and correct the cosmetic appearance in the labia and the vagina for either cosmetic reasons, better sexual function reasons or benefit pain and irritation from wearing clothes. Labiaplasty and Vaginoplasty are two distinct procedures sometimes labeled Vaginal Rejuvenation. Labiaplasty is the procedure to cosmetically correct and enhance the appearance from the outer lips or labia. Vaginoplasty is always to result in the vagina smaller and tighter. The black exhaust Black is apparently a depressing color. The reason ought to be rich mixture. That is to say, the mixture of gas in cylinder component is at night normal level. The incomplete combustion gas inside the combustion chamber make the carbon particle exhausted with the waste gas. Failure probably will come from the following reason: