It is said that the thickness of a piercing also determines the weight of the implantation operation. Those who have tried know how hard it is and what the reasons are for failure. First of all, the genital area or nipples are the most sensitive and require special caution. For these cases, the piercing barbell should not exceed 1.6 mm thick for the first pierce applied. Applying thicker piercings can irritate the area and heal longer. Most piercings can be extended in the recovery phase so that thicker jewelry can be added later.