Cos De Baha Hyaluronic Acid Serum – 1% Pure HA (10,000 ppm) Deep Hydration & Moisture Surge, 120ml
£15.99
Cos De Baha’s Hyaluronic Acid Serum delivers a full 1% Sodium Hyaluronate (10,000 ppm) in the purest possible format — just three ingredients, zero irritants, and a lightweight oil-free texture that floods skin with deep, lasting moisture without a trace of stickiness. Free from fragrance, alcohol, parabens, and animal ingredients, it’s the clean-slate hydrator that works seamlessly at every step of your skincare routine. The K-Beauty approach to hydration, distilled to its absolute essentials.
If your skin is crying out for moisture but hates the sticky, heavy feel of most hydrating serums, the Cos De Baha Hyaluronic Acid Serum was made for you. This ultra-pure, 3-ingredient formula delivers pharmaceutical-grade Sodium Hyaluronate at a full 1% concentration (10,000 ppm) — one of the highest available in a consumer serum — processed via 24-hour low-temperature aging to preserve every molecule of hydrating potency. Free from alcohol, fragrance, parabens, and every other common irritant, it’s the rare serum that works for everyone: sensitive skin, dry skin, post-sun skin, and anyone who’s had enough of unnecessary filler ingredients.
b) Clinical / Efficacy Results Table
No clinical study data (subject count, test period, or third-party study source) is visible in the provided images. This section should be updated if the brand provides efficacy study documentation.
c) Key Benefits
Ultra-high 1% HA concentration (10,000 ppm): Delivers maximum deep-layer hydration from pharmaceutical-quality Hyaluronic Acid Powder — not a watered-down trace amount
Only 3 ingredients: Sodium Hyaluronate, 1,2-Hexanediol, and Purified Water — nothing superfluous, nothing to trigger breakouts or sensitivity
Non-sticky, fast-absorbing texture: Absorbs instantly without residue, making it ideal under moisturiser, SPF, or as a layering base in a multi-step routine
Zero alcohol, zero fragrance, zero irritants: Completely clean formula — no sulfates, parabens, dimethicone, mineral oils, artificial colour, or animal-derived ingredients
24-hour low-temperature aging process: The HA powder is dissolved and stabilised at low temperature over 24 hours, ensuring superior molecular stability and efficacy versus standard mixing methods
Calms sun-stressed skin: Lightweight, oil-free hydration that soothes and replenishes after UV exposure without adding heat or heaviness
Cruelty-free and vegan: Not tested on animals; contains no animal ingredients — certified safe and pure
d) Key Ingredients Table
Ingredient
INCI Name
Benefit
Hyaluronic Acid (Sodium Hyaluronate)
Sodium Hyaluronate
Binds up to 1000× its weight in water; deeply hydrates and plumps skin at multiple layers
1,2-Hexanediol
1,2-Hexanediol
Gentle, alcohol-free preservative system; also contributes to smooth skin feel and formula stability
Purified Water
Aqua
Ultra-pure solvent base; free from impurities that could cause irritation
INCI names confirmed from image callouts and standard cosmetic formulation knowledge.
e) How to Use
Cleanse your face thoroughly and pat dry.
Apply toner (if using one) and allow to absorb fully.
Dispense 1–2 pumps of the serum into your palms or fingertips.
Press and pat gently across your face and neck — do not rub. Work it in while skin is still slightly damp for maximum HA absorption.
Follow immediately with your moisturiser or face oil to seal in the hydration — this is essential, as HA needs a barrier on top to lock moisture in rather than drawing it from deeper layers.
Apply SPF in the morning as the final step.
Pro Tips:
Skin flooding: Apply two layers of this serum back to back (first on damp skin, second before the first has fully dried) for an intense moisture surge — a popular K-Beauty layering technique.
Mix with foundation: Add 1 pump to your liquid foundation for a dewy, skin-like finish that won’t pill or separate.
Post-sun rescue: Apply liberally after sun exposure as a calming, hydrating first-aid step before the rest of your routine.
f) What It Targets
✔ Dry skin and persistent lack of moisture
✔ Dehydration lines and a tight, uncomfortable skin feeling
✔ Sun-irritated and inflamed skin needing calm hydration
✔ Sensitivity to fragrance, alcohol, and chemical additives
✔ Those seeking an oil-free, non-sticky hyaluronic serum
✔ Anyone looking for a pure, minimal-ingredient formula without chemical irritation risk
g) Why K-Beauty
Cos De Baha embodies one of K-Beauty’s most respected philosophies: maximum efficacy through minimum ingredients, with zero compromise on skin safety. Where Western serums often pack in dozens of actives and fillers, Cos De Baha strips the formula to its essential three, trusting the science of high-concentration Sodium Hyaluronate to do exactly what skin needs. This “less is more” approach — paired with the brand’s 24-hour low-temperature aging process — reflects the Korean cosmetic industry’s obsession with formulation precision over marketing noise.
