IN/OUT Serum It represents the final step

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

From Kagoshima’s volcanic highlands comes our JAS Organic Sencha — a tea of exceptional purity and poise

each product reflects the simplicity and balance of Japanese food culture

breathable hydration and renewed balance

Traditionally served after meals or before rest

IN/OUT Serum It represents the final stepLa 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.