Cos De BAHA Hyaluronic Serum 2 fl oz — 10,000 ppm Sodium Hyaluronate, Lightweight Fragrance-Free Hydration

Cos De BAHA Hyaluronic Serum is a lightweight, fragrance-free facial serum delivering pure sodium hyaluronate at 10,000 ppm for straightforward hydration.

This Korean-formulated serum focuses on a minimal, water-based ingredient list to deliver immediate, layerable moisture without fragrances, oils, or complex actives. Packaged in multiple sizes to suit travel or long-term use, the product is built for simple routines where hydration is the priority. The fast-absorbing texture works seamlessly under moisturizers and sunscreen, and its clear formulation is designed to be compatible with many skin types and products.

How does this serum fit into my morning skincare routine?

Use the serum after cleansing and any water-based toner or essence; it provides a thin, hydrating layer that helps subsequent products spread evenly. Because it is fragrance-free and lightweight, it won’t compete with daytime SPF or makeup application.

• Apply to slightly damp skin to lock in moisture.
• Follow with moisturizer and broad-spectrum sunscreen.
• Safe for layering under primer or makeup due to fast absorption.

Will this work for dry or dehydrated skin types?

The concentrated sodium hyaluronate at 10,000 ppm is formulated to attract and retain surface moisture, making it suitable as a hydration-focused step for dry or dehydrated skin. It’s not an occlusive moisturizer, so pairing it with a cream or oil can help seal hydration for longer-lasting comfort.

• Add a richer moisturizer afterwards to prevent moisture loss.
• Use consistently morning and night for best textural benefits.
• Different sizes available for trial or extended use (30 ml to 240 ml).

Is the formula simple and good for sensitive skin?

The INCI list is intentionally minimal — primarily purified water, sodium hyaluronate, and 1,2-hexanediol — which reduces the chance of irritation from unnecessary additives. The absence of fragrance and oils lowers the likelihood of reactive responses, but patch testing is recommended if you have very reactive skin.

• Fragrance-free, oil-free formulation.
• Minimal preservative system keeps the product stable.
• Suitable as a neutral hydration base in multi-step routines.

How should I use this serum with other actives like vitamin C or retinol?

This hyaluronic serum is compatible with most actives because it functions as a hydrating intermediary, not an active treatment. Apply it after cleansing and before stronger serums to provide hydration without diluting actives, or layer it afterward to reduce potential dryness from retinoids or vitamin C.

• Use before oil-based or more concentrated actives for smoother application.
• Can be applied after actives if extra hydration is needed.
• Doesn’t contain exfoliating acids or brightening actives that interfere with routines.

Who this is for: Cos De BAHA Hyaluronic Serum suits anyone looking for a no-frills, hydration-first product — especially users who prefer minimalist formulations, fragrance-free skincare, or an unobtrusive step to add moisture into both AM and PM routines. It’s useful for dry, combination, and normal skin types, and for those who want a gentle, fast-absorbing base to layer under moisturizers, sunscreens, and makeup. Choose from travel-friendly 30 ml sizes up to larger 240 ml bottles depending on how often you’ll use it.

Ingredients

Purified Water, Sodium Hyaluronate, 1,2-Hexanediol