Cosme

Ingrown hair is a hair that has not broken through the surface of the skin. The ingrown hair continues to grow under the skin. When this happens, bacteria, pus, and dead skin cells get trapped along with the hair. Ingrown hairs are common anywhere there is curly hair. The area under your chin, pubic area, upper neck or cheeks can be subject to an uncomfortable cluster of papules and sometimes pustules, which can make shaving very difficult. This condition is known as pseudofolliculitis barbae (PFB); more commonly called ingrown hairs or razor bumps. This reasons for this are the follicles are tightly curved and sometimes grow right back into the skin.

First and foremost, refrain from picking at ingrown hairs. You may create bigger problems, such as infection and scarring. Instead, apply salicylic acid (BHA) to the ingrown hair with a Q-tip. An effective product for ingrown hairs is Tend Skin, which is available at most drug stores. At any time, you can use a plastic net or natural loofah to gently exfoliate the ingrown hair area. You can also dry brush the area daily before your bath or shower. Benzoyl peroxide is the most commonly used over the counter acne medication, and is also the most effective method for treating ingrown hair. A cream or water based product may be gentler if your skin is very sensitive; however, alcohol based products may be more potent if you're able to tolerate them.

Virtually all hair removal methods can cause ingrown hairs, with the possible exception of depilatories. Depilatories are lotions that contain strong chemicals. These chemicals dissolve hair growth above the surface of your skin.
Ingrown Hair Treatment
If you have ingrown hair, you need to establish proper shaving techniques. Allowing you hair to grow long enough so they won't grow back into the skin can be helpful. Here are some tips to help prevent ingrown hairs while shaving:
Soften your hairs before shaving. After a warm shower or bath is the best time to shave. Steaming helps to soften your hair. Washing helps to remove all the oil and helps the skin to stand more erect, making them easier to cut.
Use creams or gels to moisten your hairs and to help lubricate the razor blades on your skin.
Shave with the grain. Using downward strokes. You will have less pull on the hairs if you shave in the same direction the hair lies. This will also minimize irritation as well as help in preventing ingrown hair.
Try to not to go over the same area twice. Repeated shaving of the same area may result in the hair being cut to short.
Don't stretch the skin while shaving. This leads to a closer shave and increases the chances of ingrown hairs.
Try not to shave daily unless you have to.
Don't use aftershave or cologne on the shaved areas. Instead, after shaving, rinse thoroughly with warm water and apply a mild lotion such as Cetaphil Lotion.
Rinse your razor as often as possible while shaving. Change the blades at least once a week.