The most efficient prevention is to grow a beard. For men who are required to, or simply prefer to shave, studies show the optimal length to be about 0.5 mm to 1 mm to prevent the hair growing back into the skin. Using a beard trimmer at the lowest setting (0.5mm or 1mm) instead of shaving is an efficient alternative. The resulting faint stubble can be shaped using a standard electric razor on non-problematic areas (cheeks, lower neck). For most cases, completely avoiding shaving for three to four weeks allows all lesions to subside, and most extrafollicular hairs will resolve themselves within at least ten days. Permanent removal of the hair follicle is the only definitive treatment for<unk> . Electrolysis is effective but limited by its slow pace, pain and expense. Laser-assisted hair removal is effective. There is a risk of skin discoloration and a very small risk of scarring. Some men use electric razors to control<unk> . Those who use a razor should use a single blade or special wire-wrapped blade to avoid shaving too closely, with a new blade each shave. Shaving in the direction of hair growth every other day, rather than daily, may improve<unk> . If one must use a blade, softening the beard first with a hot, wet washcloth for five minutes or shave while showering in hot water can be helpful. Some use shaving powders (a kind of chemical depilatory) to avoid the irritation of using a blade. Barium sulfide-based depilatories are most efficient, but produce an unpleasant smell.
Pseudofolliculitis barbae
Folliculitis nares perforans
Tinea imbricata
Ichthyosis bullosa of Siemens
Neutrophilic eccrine hidradenitis
Steatocystoma simplex
Trichostasis spinulosa
Lichen myxedematosus