Cosmetic technique whereby strong bleaching solutions like hydroquinones are used to lighten the anal area. This procedure is employed by strippers, body builders, actors and actresses. Seems over time, the butticular area becomes darker (some say it's due to dark foods like coffee, others speculate it's due to staining from the bilirubin content in feces.) Either way, those who aspire to wear butt floss as swimwear or do pole dancing seem to feel a lighter sphincter will improve their image.
The treatment is said to sting quite a bit.
Canula made her third appointment for anal bleaching. Despite her husband Fafner's assurance that he found her hindquarters pleasing enough as they were, Canula felt that the skin around her inner buttocks could use a good bleaching.
The treatment stung a lot, frankly, it was worse than that case of diaper rash she remembered from that unfortunate time..well, not to dwell on past failures.
When she healed up a week later, Canula donned her best thong and did a fine striptease for Fafner on their bedroom pole. Fafner agreed, her lightened sphincter was really a lot sexier and it even glowed in the dark.
This last observation puzzled Canula.