Detailed answer

Hair folliculitis decalvans is a chronic inflammatory condition that affects hair follicles, leading to scarring and hair loss. It is not caused by allergies to skincare products. Hair folliculitis decalvans is believed to be an autoimmune disorder, where the immune system mistakenly attacks the hair follicles. The exact cause of this condition is still not fully understood, but it is thought to involve genetic factors and certain bacteria, such as Staphylococcus aureus. Allergies to skincare products, on the other hand, result from a hypersensitivity reaction to specific ingredients in the products. These allergies typically manifest as skin rashes, itching, or redness, rather than affecting the hair follicles. If you suspect you have hair folliculitis decalvans or any other hair or scalp condition, it is important to consult a medical professional for an accurate diagnosis and appropriate treatment.