Science & Ingredients

Where Nature Meets Science

Advanced biotechnology revives the endangered for transformative skincare

A lost seed from Jeju Island, Korea

Revival Project No.1: Dangyuja

From Royal Courts to Near Extinction

Dangyuja is an endangered citrus species native only to Jeju Island. During the Joseon Dynasty, it was presented exclusively to royal courts—a treasured fruit symbolizing purity and vitality. Over centuries, it gradually faded from memory and survival. By 2020, only four farms on Jeju Island still cultivated this rare species.

Why Dangyuja:

Richer in vitamin C than lemons (4x), abundant in organic acids (2x), and packed with powerful flavonoids, Dangyuja delivers unmatched benefits for skin: antioxidation, regeneration, brightening, and elasticity.

Shop Dangyuja Collection

Transforming Nature Through Science

Biotechnology that enhances without compromise

Advanced Fermentation & Concentration

Through cutting-edge fermentation and concentration technology, we refine Dangyuja's flavonoids and organic acids into smaller, bioavailable molecules. The result: superior absorption, enhanced efficacy, and clinically proven skin benefits. - "Next-generation active for antioxidation and regeneration"

Vegan Alternative to Animal-Derived PDRN

Refined with advanced biotechnology, Dangyuja-PDRN is a safe, vegan, and highly pure alternative to traditional animal-derived PDRN. It enhances skin repair, renewal, elasticity, and hydration—without ethical compromise. - "Clinically proven for skin regeneration and barrier strengthening"

Formulation Standards

What We Exclude, and Why

Deardot formulates without harmful substances. Every ingredient is chosen not only for what it does, but for what it doesn't do.