De:maf Here-Oh Hydrating Serum for Dry & Sensitive Skin — 5.24 fl oz, Hyaluronic Acid & Ceramides

Here-Oh First Hydrating Serum is a lightweight Korean facial serum that delivers deep, lasting moisture with low-molecular hyaluronic acid while supporting the skin barrier.

De:maf's Here-Oh serum combines hydrating humectants, barrier-repairing ceramides, and soothing panthenol in a single, whipped-texture formula designed to replace both toner and a conventional serum. The product targets dry, tight skin by delivering moisture beneath the surface rather than sitting only on top, and it avoids common irritants like fragrance, alcohol oxidants, and exfoliating acids so sensitive and acne-prone skin types can use it with less worry.

How does this serum keep skin hydrated all day?

The serum uses low-molecular-weight hyaluronic acid to penetrate deeper skin layers and attract water where it’s most needed. It also includes emollients that create a light occlusive layer to reduce transepidermal water loss, so moisture stays put longer than with typical surface-only moisturizers.

• Low-molecular hyaluronic acid for deeper hydration
• Macadamia and jojoba esters to lock in moisture
• Light, non-greasy texture that absorbs quickly

Will this help sensitive or reactive skin feel calmer?

The formula focuses on barrier repair ingredients like ceramides and panthenol, which support the skin’s natural defenses and reduce reactivity over time. By strengthening the lipid layer, it helps keep irritants out and moisture in without using fragrances or exfoliating actives that often provoke sensitivity.

• Ceramides to rebuild and protect the skin barrier
• Panthenol to soothe and reduce visible redness
• No fragrance, no oxidants, and no exfoliants included

What is the texture and finish like—will it layer under makeup?

De:maf’s serum has a whipped, cloud-like texture that melts into skin without leaving sticky residue. It functions as a toner-plus-serum step, absorbing quickly to create a smooth, plump base that sits well under moisturizers and makeup.

• Whipped, cloud-like application for fast absorption
• Non-sticky finish that complements makeup application
• Glass-skin sheen without oily residue

Can this replace other steps in my routine?

The product is formulated to serve as both a hydrating toner and an active serum, reducing the number of layers you need to apply. With humectants, emollients, and barrier-repairing lipids in one bottle, many users find they can skip a separate toner or heavy serum while keeping hydration and protection.

• Toner and serum combined for a streamlined routine
• Suitable as a morning or evening hydration step
• Pairs well with sunscreen and lightweight creams

Who is this for: Here-Oh First Hydrating Serum is ideal for people with dry, tight, or sensitive skin who want deeper hydration and barrier support without irritation. It also suits those seeking a lightweight K‑Beauty texture that layers easily under makeup or heavier moisturizers. If you prefer fragrance-free, non-exfoliating formulas and want to cut steps from your routine while maintaining long-lasting moisture, this serum is a practical choice.

Ingredients

Water, Methylpropanediol, Glycerin, Butylene Glycol, Macadamia Ternifolia Seed Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Dipropylene Glycol, 1,2-Hexanediol, Oenothera Biennis (Evening Primrose) Flower Extract, Sodium Hyaluronate, Hyaluronic Acid, C12-14 Alketh-12, Neopentyl Glycol Dicaprate, Betaine, Panthenol, Xylitol, Ceramide NP, Lecithin, Tocopheryl Acetate, Allantoin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Carbomer, Arginine, Caprylyl Glycol, Illicium Verum (Anise) Fruit Extract, Ethylhexylglycerin, Acetic Acid, Disodium EDTA