I'm not saying it feels bad or it's the worst thing you could do if it happens accidentally, but not everyone wants nose-butthole action, so just ask first to make sure. Plus, this way, you can go to nose-butthole city worry-free, which is the best way to travel. I regret this sentence. Try not to get so focused on how totally rad your blow job is that you forget about her vag.
Why Does My Girlfriend Want To Bleach Her Anus?
Anus - Wikipedia
Anus pain is known as proctalgia and can have many causes. The anus is where your large intestine opens into your buttocks at the rectum. The anus is the last passageway of the gastrointestinal GI tract. The anus is surrounded by muscles known as sphincter muscles. These tighten and relax the anus when you pass waste. Your tailbone coccyx , the last bone in your spine, and many nerves are also near your anus.
7 Possible Causes for Anus Pain
The human anus from Latin anus meaning "ring", "circle"   is the external opening of the rectum. Two sphincters control the exit of feces from the body during an act of defecation , which is the primary function of the anus. These are the internal anal sphincter and the external anal sphincter , which are circular muscles that normally maintain constriction of the orifice and which relaxes as required by normal physiological functioning.
As far as the process itself, from what I understand, anal bleaching done correctly is safe. The process is completed through the continued application of a cream, and results happen over time. The cream should not contain chemicals as active ingredients like Kojic Acid or Hydroquinone. Remember, the best thing you can do here is have a conversation. Find out why your girlfriend wants to bleach her anus.