Arencia Deep Water Surge Serum 30ml

Deep hydration, instantly delivered. The Arencia Deep Water Surge Serum is a lightweight Korean hydration serum from Arencia's Blue Line — a hydration charging serum with a lightweight, non-sticky texture that instantly hydrates and locks in moisture, reinforces the skin's moisture barrier, and calms and soothes sensitive skin  — all in a transparent moisture coating that leaves skin dewy, plump, and visibly glowing from within. Inspired by the fields of natural herbs and natural but potent skincare remedies of Southern France, Arencia incorporates these elements into fresh, clean skincare  — designed for everyone who wants genuinely effective hydration without unnecessary ingredients or compromise.

Enriched with multi-hyaluronic acids, peptides, phyto PDRN, and Ceramide NP to keep skin resilient while locking in moisture — the soothing, gel-like texture infused with Panthenol brings calming relief while leaving skin plump and glowy. 

Why it works:

• 6 types of Hyaluronic Acid (Sodium Hyaluronate, Potassium Hyaluronate, Sodium Hyaluronate Crosspolymer, Hydroxypropyltrimonium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid) — a complete multi-molecular HA system that delivers hydration at every depth of the skin simultaneously — from the surface where sodium hyaluronate seals and plumps, to deeper layers where low molecular forms penetrate and replenish structural moisture

• Hydrolyzed DNA (Phyto PDRN) — a plant-derived polydeoxyribonucleotide that supports skin regeneration and barrier repair, delivering the regenerative benefits of clinical PDRN in a 100% vegan-compatible form

• Ceramide NP & Glycosphingolipids — a complete barrier lipid duo that holds skin cells together, seals in hydration, and shields the stratum corneum against environmental stressors and transepidermal water loss

• Dual Peptide Complex (Copper Tripeptide-1 + Acetyl Hexapeptide-8) — two precision cell-communicating peptides that stimulate collagen synthesis and improve skin elasticity, firming and smoothing fine lines while the hydration actives work

• Sodium Ascorbyl Phosphate (Vitamin C) — a stable, non-irritating Vitamin C derivative that brightens uneven skin tone and protects against UV-induced free radical damage without sensitivity

• Niacinamide — strengthens the skin barrier, controls sebum production, fades dark spots, minimises pores, and improves overall skin clarity — a complete multi-tasking active in a single ingredient

• Rice Lees Extract (Makgeolli) — a fermented rice byproduct rich in brightening Kojic Acid and Galactomyces compounds that improve skin radiance, even tone, and elasticity — Arencia's signature Hanbang-meets-science ingredient

• Green Tea Extract — powerful catechin antioxidants including EGCG that protect against UV-induced oxidative damage, reduce sebum production, and soothe inflammation with every application

• Aloe Vera Extract — one of K-Beauty's most beloved soothing botanicals, immediately calming redness and irritation while delivering a fresh, cooling hydration that absorbs instantly

• Licorice Root (Dipotassium Glycyrrhizate) Extract — soothes inflammation, reduces redness, and gently brightens uneven skin tone, working synergistically with the Niacinamide and Vitamin C

• Panthenol (Vitamin B5) — deeply conditions and maintains moisture in the skin barrier, reducing tightness and sensitivity while supporting natural healing

• Squalane & Hydrogenated Lecithin — lightweight barrier-mimicking emollients that lock in every active ingredient and condition the skin surface without greasiness or heaviness

• Gardenia Extract — a traditional botanical with skin-toning and antioxidant properties that brightens and protects with consistent daily use

• Betaine & Glycerin — gentle, compatible humectants that draw moisture from the environment into the skin and maintain lasting comfort without any stickiness

• Adenosine — clinically proven to reduce the appearance of fine lines and support skin firmness over time

• Free from harsh alcohols, common allergens, fragrances, oils, parabens, silicones, and sulfates  · Vegan · Cruelty-free · Made in Korea 🇰🇷

How to use: Apply a generous amount to the skin after toner and gently pat to aid absorption.  Follow with moisturiser. Suitable for morning and evening use. For maximum hydration, layer 2–3 times in succession before moisturiser — each layer pressing fully into the skin before the next is applied. Always follow with SPF in the morning.

Suitable for: All skin types · Sensitive & reactive skin · Dehydrated, dry & tight skin · Barrier-damaged & post-procedure skin · Oily skin needing lightweight hydration · Fragrance-free · Vegan · Made in Korea 🇰🇷

Why Seoulma recommends it:

Arencia is one of those brands that operates quietly in the background of K-Beauty's more viral moments — and yet every product they make is formulated with a precision and ingredient integrity that most louder brands struggle to match. The Deep Water Surge Serum is the clearest expression of that philosophy: 69 carefully chosen ingredients, not one of them filler, organised around the single goal of delivering the deepest, most lasting hydration possible in a gel-serum format.

The six-type Hyaluronic Acid system is the engineering that makes this serum genuinely different from standard hydrating serums. Hyaluronic Acid is not a single molecule — it exists across a vast range of molecular weights, each of which penetrates to a different depth in the skin and performs a different function.

The phyto PDRN from Hydrolyzed DNA is also an ingredient worth understanding for our customers who have discovered Salmon PDRN in other products and want its regenerative benefits in a vegan formula. Plant-derived DNA fragments function through the same purinergic receptor mechanism as salmon PDRN — supporting cellular repair, barrier regeneration, and collagen synthesis — without any animal-derived ingredients. For customers building a fully vegan K-Beauty routine who don't want to compromise on the regenerative benefits of PDRN, this is the serum to reach for.

The texture is also something that consistently surprises customers on first use. The gel formula feels lighter than water on application, absorbs within seconds, and leaves zero tackiness or film on the skin — which makes it equally perfect under SPF in the morning and under a richer moisturiser at night. For anyone whose skin feels perpetually thirsty regardless of how much moisturiser they apply, this serum — applied before moisturiser — is typically the step that finally solves the problem.