Brush your extensions two times a day and apply oil mids- ends. I recommend using the Oribe Gold Lust oil.
When swimming avoid dunking your head. If you must go in the water do a tight bun. wash & blow dry your hair immediately after. Use a mineral based sunscreen & avoid sunscreen with Avobenzone.
Wash your hair 1-2x a week and use a moisturizing or repairing shampoo. Make sure you’re blow drying the wefts.