INCI: Hippophae Rhamnoides Water
Antioxidant and skin conditioning hydrosol
Sea Buckthorn Water is a botanical hydrosol derived from the berries of Hippophae rhamnoides, a resilient shrub that thrives in harsh, cold climates across Asia and Europe. Unlike oils or extracts, this water-based ingredient captures the plant's water-soluble vitamins and minerals through steam distillation, delivering lightweight hydration packed with antioxidants. Sea buckthorn is one of the few plant sources naturally rich in all four omega fatty acids (3, 6, 7, and 9), plus an exceptional concentration of vitamin C, tocopherols, and carotenoids. In K-beauty formulations, sea buckthorn water serves as a multitasking base ingredient that brightens, strengthens the skin barrier, and protects against environmental damage without adding weight or oiliness. Its non-comedogenic profile (0/5) makes it safe for all skin types, while its antioxidant properties help neutralize free radicals that accelerate aging. With a strong safety rating of 4/5 and presence in 33 products on Seoul Sister, including top performers like Medicube's Vitamin Pudding Mist Ampoule (5.0/5) and MEDIPEEL's Melanonx Ampoule RX (5.0/5), this ingredient has earned its place as a go-to for brightening and barrier support in modern Korean skincare.
Sea buckthorn water delivers antioxidant protection through a synergistic complex of vitamin C, vitamin E, and carotenoids that work together to neutralize reactive oxygen species (ROS) generated by UV exposure, pollution, and metabolic stress. The high vitamin C content (sea buckthorn contains up to 15 times more vitamin C than oranges) supports collagen synthesis by acting as a cofactor for prolyl hydroxylase, the enzyme responsible for stabilizing collagen structure. Meanwhile, the carotenoids, particularly beta-carotene, absorb into the stratum corneum where they provide additional photoprotective effects by quenching singlet oxygen. The water-soluble flavonoids in the hydrosol, including quercetin and isorhamnetin, inhibit tyrosinase activity, helping to prevent melanin overproduction and promote a more even skin tone. Unlike heavier sea buckthorn oils, the water form provides humectant properties that help skin retain moisture without interfering with subsequent product absorption, making it ideal for layering in multi-step routines.
Sea buckthorn water is excellent for oily skin because it delivers antioxidant benefits and hydration in an ultra-lightweight, non-greasy format. The astringent tannins naturally present in the hydrosol can help refine pores and control excess sebum without stripping skin or triggering rebound oil production.
This ingredient works beautifully for dry skin by providing gentle, water-based hydration that supports barrier function without heaviness. The vitamin C and E complex helps repair compromised barriers often seen in dry skin types, while the humectant properties help skin hold onto moisture throughout the day.
Combination skin benefits from sea buckthorn water's balanced approach to hydration. It delivers moisture to dry areas without adding oil to the T-zone, and its non-comedogenic nature means it won't cause congestion in areas prone to breakouts while still nourishing drier cheeks and temples.
With its 4/5 safety rating and gentle, soothing properties, sea buckthorn water suits sensitive skin well. The anti-inflammatory compounds help calm redness and irritation, while the antioxidants protect already vulnerable skin from environmental stressors. However, those with known plant allergies should patch test first.
Normal skin can use sea buckthorn water as a preventative antioxidant treatment to maintain healthy skin function and delay visible aging. It provides just enough hydration to support the barrier without disrupting the skin's natural balance, making it an ideal everyday ingredient for maintenance and protection.
Sea buckthorn has been used in traditional Tibetan, Mongolian, and Chinese medicine for over 1,200 years, where it was valued for its healing properties and nutritional density. Ancient physicians used the berries to treat everything from digestive issues to skin conditions, and Genghis Khan reportedly fed it to his horses to keep them healthy during long campaigns. The plant earned the Latin name Hippophae rhamnoides (hippo meaning horse, phaos meaning shining) because horses that grazed on it developed particularly glossy coats. In skincare, sea buckthorn gained modern popularity in Europe during the mid-20th century before K-beauty brands recognized its potential as a lightweight, vitamin-rich alternative to heavier botanical oils. Korean formulators particularly appreciate how the water form fits seamlessly into multi-step routines, delivering concentrated benefits without the occlusive properties of oils that might interfere with layering.

Vitamin Pudding Mist Ampoule
Medicube

Melanonx Ampoule RX
MEDIPEEL

No. 5 Vitamin Boosting Essential Toner
Numbuzin

Vitamin C Boosting Serum
Dr. Althea

Tranexamic Acid 6% Cream
Dermafactory

Vita Brightening Dark Spot Serum
Rovectin

Red Blemish Repair Soothing Cream
Dr.G

Vita Toning Anti-Aging Spray Serum 8%
d'Alba

Vitamin Spot Care Set
Dr.G

Pink Guava Glutathione Blemish Serum Refill Set
Begins by JUNGSAEMMOOL

Melanon X Ampoule Cleanser
Medi-Peel

Veramore Brightening Milk Foaming Balm
Banila Co
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