Dermalogica Circular Hydration Face Serum — 1 fl oz, Hyaluronic + Polyglutamic Acid for 10+ Hour Moisture

Dermalogica Circular Hydration Face Serum is a concentrated daily serum that instantly quenches skin and sustains visible hydration for over 10 hours while helping improve hydration levels with regular use.

Designed for all skin types that need dependable moisture without heaviness, this 1 fl oz serum combines multiple humectants, gentle exfoliation and microbiome-supporting ingredients to help skin feel plumper, smoother and more resilient. Clinical testing on a sample group found immediate and lasting hydration benefits when used twice daily over several weeks; individual results vary. The formula layers easily under moisturizers and makeup for a straightforward daily routine.

How does this serum deliver deep, long-lasting hydration?

The serum uses a blend of hyaluronic acid variants and polyglutamic acid to attract and retain water within the skin’s surface layers. Lightweight humectants pull moisture in, while film-forming and algae-derived components help minimize trans-epidermal water loss for sustained comfort.

• Multiple molecular weights of hyaluronic acid for surface and deeper hydration.
• Polyglutamic Acid locks in moisture longer than hyaluronic acid alone.
• Algae extract provides natural moisture retention and skin feel improvement.
• Fast-absorbing texture layers under creams and SPF without pilling.

Will this serum brighten and smooth skin texture?

Yes — a low concentration of lactic acid gently exfoliates to promote smoother, more even skin texture while humectants plump fine lines. The exfoliation is designed to be mild for frequent use, improving radiance over time without aggressive irritation when used as directed.

• Lactic acid encourages gentle cell turnover for a fresher surface.
• Hydrators reduce the appearance of dryness-related fine lines.
• Formulation suitable for daily layering, which supports gradual texture improvement.
• Non-greasy finish helps makeup apply more evenly.

How does the product support the skin’s natural defenses and microbiome?

The formula includes a postbiotic blend crafted to help maintain a balanced skin environment, supporting the microbiome that contributes to overall skin comfort and resilience. These ingredients work alongside humectants and botanical extracts rather than replacing barrier care.

• Postbiotics help nurture a stable skin ecosystem.
• Algae and hydrating actives complement barrier-supporting benefits.
• Designed to be paired with barrier creams for comprehensive protection.
• Free from heavy oils that can unsettle sensitive microbiomes.

How should I use this serum in my daily routine?

Apply a few drops to clean, damp skin morning and night, then follow with your moisturizer and sunscreen in the morning. The serum is lightweight and absorbs quickly, making it easy to layer with other targeted treatments.

• Use after cleansing and any water-based toners or essences.
• Massage 2–4 drops into face and neck while skin is slightly damp.
• Follow with moisturizer to seal hydration; apply SPF during daytime.
• Compatible with most serums and actives; avoid mixing strong exfoliants at the same time.

Who this is for: Dermalogica Circular Hydration Face Serum suits anyone seeking dependable, lightweight hydration—especially skin that feels tight, shows dehydration lines, or looks lackluster from dryness. It’s appropriate for normal, combination, dry and oily skin types that want sustained moisture without heaviness. If you have very reactive skin or are using potent exfoliants, introduce the serum gradually and consult a skincare professional when combining multiple active treatments.

• Key benefits: immediate plumping, 10+ hour hydration, improved hydration over time.
• Primary actives: hyaluronic acid variants, polyglutamic acid, lactic acid, algae extract, postbiotic blend.
• Size: 1 fl oz (30 mL) — suitable for travel and daily use.

Ingredients

Water/Aqua/Eau, Glycerin, PEG-8, Methylpropanediol, Propanediol, PPG-24-Glycereth-24, 1,2-Hexanediol, Xylitylglucoside, Butylene Glycol, Hydroxyethyl Urea, Panthenol, Hydroxyacetophenone, Lactic Acid, Hyaluronic Acid, Sodium Hyaluronate, Dunaliella Salina Extract, Avena Sativa (Oat) Kernel Extract, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Citrus Paradisi (Grapefruit) Peel Oil, Citrus Limon (Lemon) Peel Oil, Santalum Album (Sandalwood) Oil, Laminaria Digitata Extract, Jasminum Sambac (Jasmine) Flower Extract, Macrocystis Pyrifera (Kelp) Extract, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Lithothamnion Calcareum Extract, Citrus Aurantium Dulcis (Orange) Oil, Cupressus Sempervirens Leaf/Nut/Stem Oil, Cistus Ladaniferus Leaf/Stem Extract, Juniperus Virginiana Oil, Rosmarinus Officinalis (Rosemary) Flower/Leaf/Stem Extract, Tagetes Minuta Flower Oil, Rosa Damascena Flower, Hydrolyzed Rice Protein, Pentylene Glycol, Sodium PCA, Anhydroxylitol, Xylitol, Polyglutamic Acid, Lactobacillus Ferment, Lysine HCl, Betaine, Sclerotium Gum, Sodium Lactate, PCA, Glucose, Serine, Alanine, Glycine, Silanetriol, Pantolactone, Glutamic Acid, Threonine, Arginine, Proline, Xanthan Gum, Tetrasodium Glutamate Diacetate, Polysorbate 20, Sorbitan Isostearate, Citric Acid, Sodium Hydroxide, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Amylopectin, Hydroxyethylcellulose, Sodium Benzoate, Potassium Sorbate, Limonene, Linalool.