What percent should be used to see results with a TCA peel for penis Fordyce spots?

TCA doesnt help this and often the spots come back even with the beste treatment such as laser, dessication, plasmapen. I suggest you go to an expert. and you MUST pre treat this area my protocol is is clinical proheal and skinceutocals phyto + In the am and reven skin retinol and fortified bleaching cream in the PM (see link to emeragecosmetics.com).  see my blog as well on jasonemermd.com about penile pearly papules and fordyce spots. Best, Dr. Emer.