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breathable hydration and renewed balance
each product reflects the simplicity and balance of Japanese food culture
and barrier strength
It represents the final step of the IN/OUT ritual — a comforting phase that helps lock in hydration and preserve the skin’s natural resilience
only a sense of deep
IN/OUT Serum breathable hydration and renewed balanceLa Sincia IN OUT Serum is the third step of the IN OUT ritual a targeted treatment phase that delivers intense hydration and visible renewal. Formulated with traditional Japanese fermented ingredients sourced from a historic Edo period sake brewery, this serum combines aged sake lees, fermented soy milk, and fermented rice extract ingredients long celebrated in Japanese beauty rituals for their ability to promote clarity, softness, and elasticity.
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