Detailed answer

Hair scars or scarring alopecia is usually caused by inflammation, trauma, or damage to the hair follicles. Allergies to skincare products can cause skin reactions such as itching, redness, or rashes, but they do not directly lead to hair scars. However, if severe skin reactions occur, constant scratching or picking at the affected area may result in secondary damage to the hair follicles, leading to hair loss. It is important to identify and avoid allergens in skincare products to prevent any potential skin reactions that could indirectly impact the health of the hair follicles.