Detailed answer

Hair cellulitis, also known as folliculitis, is an infection of the hair follicles caused by bacteria or fungi. Allergic reactions to skincare products may cause skin irritation or rashes, but they do not directly lead to hair cellulitis. Hair cellulitis usually occurs when bacteria or fungi enter the hair follicles through cuts, abrasions, or other means. To prevent hair cellulitis, it's essential to maintain good hygiene, avoid sharing personal items that come into contact with the scalp, and keep the scalp clean and dry. If you suspect you have hair cellulitis or any other scalp condition, it is recommended to consult a medical professional for proper diagnosis and treatment.