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It is part of the endocrine system and helps regulate circadian rhythms through the production of melatonin, a hormone involved in sleep timing and biological clock regulation (read more on melatonin in our previous blog post)

Scientific Reports 8:3660

Breaks make sense for users experiencing treatment plateau where benefits cease increasing despite continued application suggesting diminishing returns from ongoing use, comfortable with some benefit decline during off periods accepting fluctuation in skin quality, budget-conscious seeking to minimize annual treatment costs through intermittent purchasing, philosophically preferring avoiding indefinite dependency on any skincare product, planning life changes incompatible with consistent application (extended travel, relocation, financial shifts), and wanting to assess whether improvements prove durable or require continuous maintenance before committing to indefinite treatment

Direct answer: It improves metabolic health while in use

PMID 16087991