A sunscreen built on the same fermentation science behind traditional Korean rice water

The traditional use of rice water in Korean skincare, and what modern formulation adds to it

Rice water — the starchy liquid left after rinsing rice — has a long history in Korean beauty tradition, valued for a softening, brightening effect attributed to its vitamin and mineral content. Modern cosmetic formulation builds on this traditional ingredient by adding probiotic ferments, which further break down the rice-derived compounds into smaller, more skin-bioavailable molecules than the traditional preparation alone would provide.

Why probiotic fermentation pairs specifically well with a barrier-support sun care goal

Probiotic and postbiotic ferments support the skin's microbiome balance and barrier function — relevant in a sunscreen formula because UV exposure itself can disrupt the skin's microbiome and barrier over time, meaning a fermented, barrier-supportive sunscreen is working to offset some of the very stress that daily sun exposure places on skin, beyond simply blocking the UV itself.

Incorporating a fermented rice sunscreen into a routine focused on barrier resilience

Use as the daily SPF step for routines already built around fermented or barrier-supportive ingredients, maintaining ingredient-philosophy consistency across the routine rather than mixing barrier-focused treatment steps with a sunscreen that works against that goal. Apply generously and reapply at midday as with any sunscreen — the barrier-support benefit is a bonus alongside, not a replacement for, the core UV protection function.

Beauty of Joseon Relief Sun: Rice + Probiotics SPF50+ PA++++ 50ml — available on BuyBeautyKorea →