Nyctanthes arbor-tristis is a shrub to small tree of the Oleaceae family native to the Indian subcontinent and Southeast Asia. Its fragrant white flowers bloom at night and fall in the morning, hence its nickname "the flower that blooms at night and falls in the morning." In Ayurveda and Unani medicine, the leaves, flowers, and bark are widely used for medicinal purposes, including for treating inflammation, regulating the immune system, treating skin problems, and promoting hair growth.
In particular, it has been reported that water hyacinth leaf extract may contribute to maintaining a healthy hair follicle environment through its anti-inflammatory, antioxidant, and microcirculatory support effects on the scalp. Some basic research suggests that it may support the hair growth cycle (anagen phase), and research into its application as a hair growth material is also underway.
In terms of ingredients, flavonoids, iridoid glycosides, phenolic compounds, essential oil components, etc. have been identified, and their combined effects are expected to contribute to maintaining scalp barrier function, reducing oxidative stress, and adjusting sebum balance.
Characteristics of Yorsokei
- Scientific name: Nyctanthes arbor-tristis
- Classification: Oleaceae
- Japanese name: Yorusokei
- Also known as Parijata, Night Flower Jasmine
- Origin and distribution: India, Nepal, Southeast Asia
- Growth form: Shrub to small tree
- Parts used: leaves, flowers, bark
Main ingredients (reported examples)
- Flavonoids: Quercetin, kaempferol derivatives
- Iridoid glycosides: nyactanside, arbotristside
- Phenolic compounds: phenolic acids
- Essential oil components: Linalool, terpenes (trace amounts)
- Others: polysaccharides, organic acids, trace minerals
Expected effects (scalp and hair growth focus)
- Supports hair follicle environment: It has been suggested that this product may contribute to stabilizing hair follicle condition by maintaining the scalp's microcirculation and nutrient supply environment.
- Hair growth support: Basic research suggests that it may contribute to maintaining the growth phase of the hair cycle and supporting hair density.
- Anti-inflammatory and scalp soothing support effects: It has been suggested that it may contribute to reducing redness, itchiness, and inflammatory stress on the scalp.
- Antioxidant and hair follicle protection effects: It has been suggested that it helps protect hair follicle cells from UV rays and oxidative stress.
- Sebum balance adjustment support: It has been suggested that it may gently regulate excess sebum and scalp environment disorders.
- Dandruff and scalp trouble care support: It has been suggested that it may contribute to adjusting the microbial balance and stabilizing the keratin environment.
- Helps maintain hair firmness and strength: It has been suggested that this product may contribute to maintaining the health of hair fibers and stabilizing hair quality.
