Vitamins support the immune system, skin, energy, and overall health. Japanese women are intentional about their vitamin intake, particularly vitamin C, which supports collagen production and keeps skin bright and firm. Small daily habits here make a genuinely big difference. Strengthening the immune system, supporting healthy skin, hair, and nails, boosting energy naturally, and improving mood and focus are not separate goals. They are all connected, and vitamins are a quiet but powerful thread running through all of them.