What is the primary reason for conducting a patch test before trying a new skincare product?

Conducting a patch test before trying a new skincare product is primarily aimed at identifying potential allergic reactions. The skin can react unpredictably to various ingredients in cosmetics and skincare formulations. By applying a small amount of the product to a discreet area of skin—often on the inner forearm or behind the ear—individuals can monitor for any adverse reactions like redness, itching, or swelling over a 24 to 48 hour period. This helps in determining whether the product is safe for broader use on the face or body.

Understanding potential allergic reactions is critical, as they can vary in severity and may require immediate attention. Other options related to fragrance assessment, product pricing, or product effectiveness do not directly address health and safety; these factors are secondary and can be considered once the safety of the product is established. The primary focus of a patch test is to safeguard against harmful reactions, making identifying potential allergies the most pertinent reason for this practice.