Dr.Althea Aqua Marine Deep Serum 30 ml is a lightweight Korean hydrating serum designed to deeply replenish moisture, support the skin barrier, and improve overall skin softness and glow. Powered by marine-derived hydrators, hyaluronic acid, and soothing botanical extracts, it helps relieve dehydration while keeping skin fresh, plump, and comfortable without a sticky finish.

Synonym Names

• Dr.Althea Aqua Marine Deep Serum
• Dr.Althea Marine Hydrating Serum
• Dr.Althea Deep Hydration Serum
• Dr.Althea Aqua Serum
• Marine Moisture Serum
• Skin Elixir
• Hydrating Concentrate

Type of Serum

This is a hydrating and barrier-support serum, formulated to deeply replenish moisture, reduce dehydration, and support smoother, more resilient skin. It is ideal for skin that feels dry, tight, dull, or easily dehydrated.

Key Ingredients

• Marine Water / Sea Water – Helps replenish minerals and support skin hydration
• Sodium Hyaluronate – Helps attract and retain moisture for plumper-looking skin
• Hydrolyzed Hyaluronic Acid – Helps deliver lightweight deep hydration
• Panthenol – Helps soothe and support the skin barrier
• Betaine – Helps maintain moisture balance and skin softness
• Trehalose – Helps protect against moisture loss
• Allantoin – Helps calm and comfort sensitive skin
• Centella Asiatica Extract – Helps soothe visible irritation and support skin recovery
• Laminaria Japonica Extract – Marine algae extract that helps support hydration and skin conditioning
• Tocopherol (Vitamin E) – Provides antioxidant support

How It Works

Dr.Althea Aqua Marine Deep Serum delivers lightweight moisture deep into the skin using marine-derived hydrators and multiple humectants that attract and retain water. Hyaluronic acid forms help improve moisture retention, while panthenol, centella, and allantoin help soothe stressed skin and support barrier repair. This helps skin feel more hydrated, smoother, and less tight over time.

Benefits

• Helps deeply hydrate and plump dry skin
• Helps improve skin softness and smoothness
• Helps reduce tightness caused by dehydration
• Supports a healthier skin barrier
• Helps calm sensitivity and visible redness
• Improves skin glow and fresh appearance
• Lightweight, fast-absorbing texture
• Helps support smoother makeup application

Why Choose This Product

• Deep hydration without heaviness
• Fast-absorbing and non-sticky texture
• Fragrance-free and gentle formula
• Helps support sensitive and dehydrated skin
• Lightweight enough for layering
• Suitable for daily AM and PM use
• Designed to support barrier comfort and skin glow

Suitable For

• Dry skin
• Dehydrated skin
• Sensitive skin
• Normal skin
• Combination skin
• Barrier-damaged skin
• Dull and tight-feeling skin

How To Use

• Cleanse and tone your skin
• Apply 2–3 drops of serum to face and neck
• Gently pat until absorbed
• Follow with moisturizer
• In the morning, finish with sunscreen

AM/PM Use:

• Use in the morning for hydration and smoother makeup wear
• Use at night for barrier support and overnight moisture recovery

Layering Tips:

• Apply after toner and before moisturizer
• Pairs well with niacinamide, ceramides, and soothing creams
• Can be layered with actives like vitamin C or retinol to reduce dryness

Recommended Frequency / Duration

• Use once or twice daily
• Suitable for daily AM and PM use
• Visible hydration improvement may be noticed within 1–2 weeks
• More noticeable barrier and texture support may improve over 3–4 weeks

Precautions

• For external use only
• Patch test before first use
• Avoid direct contact with eyes
• Do not apply on broken or irritated skin
• Stop use if irritation occurs
• Use sunscreen after morning application

Side Effects

Some users may experience:

• Mild temporary stickiness if over-applied
• Rare irritation in very reactive skin
• Occasional pilling if layered with heavy silicone products

This serum is generally well tolerated, especially by dry and dehydrated skin types, and is typically considered low-irritation due to its gentle hydrating focus.

Storage Instructions

• Store in a cool, dry place
• Keep away from direct sunlight
• Keep bottle tightly sealed after use
• Avoid storing in excessive heat or humidity

Additional Information

• Net Volume: 30 ml
• Texture: Lightweight watery serum
• Finish: Fresh, hydrated glow
• Fragrance-Free
• Alcohol-Free
• Vegan
• Cruelty-Free
• Suitable for daily use

Certifications / Testing

• Dermatologist Tested
• Cruelty-Free
• Vegan Formula
• Low-Irritation Formula
• Manufactured in South Korea under cosmetic quality standards

FAQs

What is Dr.Althea Aqua Marine Deep Serum used for?
It is used to deeply hydrate skin, reduce dehydration, and support smoother, more comfortable skin.

Is it suitable for sensitive skin?
Yes, it is generally suitable for sensitive skin and is designed with soothing, low-irritation ingredients.

Can oily skin use it?
Yes, its lightweight watery texture can also suit oily or combination skin that needs hydration without heaviness.

Can I use it with retinol or vitamin C?
Yes, it can be layered with retinol or vitamin C to help offset dryness and support skin comfort.

Does it feel sticky?
It is designed to absorb quickly, though over-applying may leave slight temporary tackiness.

How long does it take to see results?
Many users notice improved hydration within 1–2 weeks, with smoother skin and better barrier comfort over several weeks.

Disclaimer

The content is purely informative and educational in nature and should not be construed as medical advice. Please use the content only in consultation with an appropriate certified medical or healthcare professional.