User Story for COSLUS Professional Water Flosser: Meet the Harrisons-a busy family of five in Chicago who value health, convenience, and quality. Between braces, sensitive gums, and hectic schedules, maintaining consistent oral care felt overwhelming-until they discovered the COSLUS Professional Water Flosser. For Emma (14, braces): Orthodontic care used to mean painful flossing sessions. Now, Emma uses the orthodontic nozzle with the Gentle Mode (20 PSI) to clean around her brackets effortlessly. The 12 pressure settings let her customize intensity as her sensitivity changes, while the 1,400 pulses/minute ensure no plaque hides in hard-to-reach spots-proven to remove 10x more plaque than manual brushing. For Mr. Harrison (45, tartar buildup): As someone prone to tartar, he relies on the Deep Clean Mode (160 PSI) paired with the standard nozzle to blast away stubborn debris. The stable water flow prevents messy splashing, and the 600mL tank lasts through his 3-minute session without refilling-saving time during his morning routine. For Grandma Joan (60, sensitive gums): Her fragile oral soreness with traditional floss. Now, she uses the periodontal nozzle at 10 PSI for a pain-free clean. The non-slip grip and auto-shutoff give her confidence, while the ventilated storage box keeps her nozzles hygienic and organized. For the Whole Family: The 5 specialized nozzles (including a tongue cleaner) live neatly in the patented storage box, avoiding contamination. The compact design fits seamlessly on their bathroom counter, and the sturdy stand keeps it accessible for everyone. Even their youngest, Liam (8), loves the intuitive controls-no more struggles with dental picks! Why They Trust COSLUS: Developed with dental experts and tested to last 3+ years, this flosser adapts to every life stage. From braces to aging gums, the 24 tailored settings turn oral care from a chore into a shared, healthy habit. No more compromises-just a cleaner, brighter smile for all

• Professional Cleaning and Care Oral: This water flosser was developed by the COSLUS R&D team in collaboration with dental experts. Water dental pick offer advanced high-frequency pulses (10-160 PSI, 1400 pulses/min), which means they adapt to every user, proven to eliminate 10× more plaque than manual brushing. This water floss is designed orthodontic, braces, sensitive gums, and daily care through 12 adjustable pressures and 5 specialized tips, solving oral cleaning challenges while protecting