The MAC LipGlazer Glossy Liner is designed for immediate use right out of its packaging. Simply remove the cap and apply. It's compatible with a wide range of lip products and can be worn alone for a subtle glossy tint or paired with other lipsticks and glosses to create more complex looks, as indicated by its ability to "gloss up your lip looks" and complement "iconic shades." For care, always ensure the cap is securely replaced after each use to prevent drying and maintain the product's creamy texture. Info needed: Specific recommendations for sharpening (if applicable to its format) or long-term storage conditions beyond keeping the cap on are not detailed in the product description.