Setup:This product comes ready to use. Simply uncap the bottle and apply as desired. No assembly or preparation is required.Compatibility:Ghost Sweetheart Always Eau de Parfum is generally compatible with most skin types. If you have particularly sensitive skin or known allergies to fragrances, it is recommended to perform a patch test on a small, inconspicuous area of skin (like your inner elbow) 24 hours before full application. This product is designed for external use only.Care:1. Storage: To preserve the integrity and longevity of your fragrance, store the bottle in a cool, dark place, away from direct sunlight and extreme temperature fluctuations. A drawer or cupboard is ideal.2. Cap Securely: Always replace the cap tightly after each use to prevent evaporation and exposure to air, which can alter the scent over time.3. Avoid Shaking: While not strictly harmful, excessive shaking is generally not recommended for perfumes as it can introduce air and potentially impact the fragrance composition over a very long period.4. Cleaning the Nozzle: If the spray nozzle becomes clogged, gently wipe it with a clean, damp cloth. Avoid poking with sharp objects.