Does primer cause any harm to the skin?

Whether primer is harmful to the skin mainly depends on product selection, application method, and individual skin type. Generally speaking, primers from reputable brands will not harm the skin when used correctly. The primary function of primer is to create a barrier between the skin and cosmetics, pollutants in the air, and ultraviolet radiation, thereby protecting the skin from environmental damage. Additionally, it provides a certain level of color correction and can enhance skin radiance. However, if an unregulated primer is selected or if it is used improperly (such as applying too much or failing to remove it completely), it may cause certain harm to the skin. These adverse effects may include skin irritation, allergic reactions, clogged pores, and interference with the skin's natural detoxification process, which could lead to problems such as redness, itching, and acne. Therefore, when choosing a primer, it is advisable to select products from reputable brands and make selections based on your own skin type and specific needs.