Detailed answer

Hair and scalp sebaceous adenomas are benign tumors that form in the sebaceous glands. They are typically caused by genetic factors rather than allergies to skincare products. However, it is possible for an allergic reaction to certain skincare products to cause inflammation and irritation in the scalp, which may lead to the development of other skin conditions or exacerbate existing ones. It's important to identify and avoid any irritants or allergens that could trigger a reaction and consult with a dermatologist for proper diagnosis and treatment.