Good skin tolerance is an important factor for most people when choosing skin care products, cosmetics and other beauty products. Good skin tolerance means that a skin care product does not irritate the skin or cause allergic reactions or other undesirable side effects. “Dermatologically tested” means that a skin care product has been tested by dermatologists or in a dermatological laboratory for its safety and compatibility for the skin. Typically, dermatological testing takes into account different skin types to ensure that the product is suitable for most people. The tests may also identify allergens and irritants that could cause skin irritation or other adverse reactions. Overall, “dermatologically tested” is a positive indication that a product has been carefully tested for good skin compatibility, but it’s still important to check ingredients if you have allergies or sensitive or problematic skin.