Setup: This product requires no complex setup. Simply twist open the cap and apply the oil using the built-in doe-foot applicator. Compatibility: The Clarins Lip Comfort Oil is highly compatible with other lip products. It can be worn over most lipsticks, lip liners, and even lip balms without pilling or causing discomfort. Its lightweight texture integrates seamlessly with other formulations. Care: To ensure the longevity and quality of your Lip Comfort Oil, store it in a cool, dry place away from direct sunlight and extreme temperatures. Always secure the cap tightly after each use to prevent product leakage and to maintain its freshness. If the applicator tip becomes soiled, gently wipe it clean with a tissue.