A mole is a skin abnormality that develops when skin grows in a cluster instead of spreading out. These are usually dark, small patches of skin no larger than the size of an eraser head. Although they are most often harmless, some moles can develop into melanoma skin cancer. If you are concerned about a mole that may be cancerous, please refer to our skin cancer treatment page.
Shaving: A combination treatment that uses electrocautery and shaving to reduce the appearance of protruding moles. Mole shaving does not remove the root of the mole, so there is no excision scar, however there is a chance it will grow back over time. This procedure is most commonly used on protruding moles in areas that do not heal well with excision (nose).  
There are a few at-home skin tag removal kit options you can pick up from pharmacies - some products are designed to freeze small skin tags, others involve wrapping small rubber bands around the skin tag to cut off the blood supply, and we’ve also seen ones where you apply a solution to the tag and cover it in a bandaid to hinder the supply of oxygen.
Moles are clusters of pigment-producing cells that can appear anywhere on the skin—alone or in groups—as tan, brown, black, or yellowish, skin-toned spots. If you have a mole you want to remove, the safest, most effective way to do it is by consulting with a doctor to have it professionally removed. It's an easy out-patient procedure for benign, noncancerous moles that just takes a few minutes. Attempting to remove a mole on your own can result in scarring, bleeding, infection, and the possibility of missing a cancerous mole. If you really don't want to deal with surgery, try fading the appearance of your mole using an unverified home remedy.

There is no evidence that removing a skin tag will cause more tags to grow. There is no expectation of causing skin tags to "seed" or spread by removing them. In reality, some people are simply more prone to developing skin tags and may have new growths periodically. Some individuals request periodic removal of tags at annual or even quarterly intervals.
As far as other DIY methods for skin tag removal at home, such as applying apple cider vinegar, coconut oil, tea tree oil, etc., Geraghty notes that there's no compelling evidence to show that those therapies are effective. "You can't make tissue disappear by putting a little vinegar on it. It just doesn’t work... You really need that to physically be removed."
Don’t impulsively deem any protruding bump as a skin tag; after all, there is an overwhelming number of things it could be—moles and seborrheic keratoses can closely resemble skin tags. Even worse, it could be something that requires medical treatment such as genital warts (possible indication of a sexually transmitted disease). Some growths could also be an extension of glands on the skin, and they can get infected if you’re poking at them at home. As a rule of thumb, if the tag is pigmented, see a dermatologist to get it evaluated. And here are 11 other skin mysteries you should know about.
Insulin resistance, which may lead to type 2 diabetes and prediabetes, may also play a role in the development of skin tags. People with insulin resistance don’t absorb glucose effectively from the bloodstream. According to a 2010 study, the presence of multiple skin tags was associated with insulin resistance, a high body mass index, and high triglycerides.