Experience deep skin hydration alongside high-level photoprotection with the Rohto Skin Aqua Serum UV SPF 50+ PA++++. Specially calibrated to combat skin dryness, dehydration, and photo-aging without leaving a heavy, sticky, or greasy residue, this serum-infused daily sunscreen wraps the skin in a breathable liquid moisture veil. By suspending high-performance organic filters in a rich hydration matrix, it glides across skin micro-contours effortlessly. This Japanese formulation works continuously to reinforce the skin's moisture barrier, prevent sun-induced collagen loss, and impart a dewy, youthful glow that lasts all day.

Serum Encapsulation & Moisture Shield Mechanics

Advanced Serum-Based UV Matrix

The core delivery mechanism of Skin Aqua Serum UV lies in its water-burst serum vehicle. Organic filters—such as Ethylhexyl Methoxycinnamate, Ethylhexyl Triazone (Uvinul T 150), and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (Tinosorb S)—are micro-encapsulated within an aqueous serum phase. Upon application, the friction causes the watery serum phase to burst onto the skin surface, delivering active humectants directly into the stratum corneum while the UV filters set into a flexible, gapless protective veil.

Deep Epidermal Hydration Complex

Composed of a 70% skin-conditioning serum base, the formula delivers key humectants into the skin layers:

• Sodium Hyaluronate: High-capacity moisture binder that retains water in the skin, plumping fine lines and preventing dryness.

• Soluble Collagen & Amino Acids: Structural protein derivatives that nourish the skin barrier and restore supple elasticity under UV stress.

• Squalane: Bio-compatible lipid that seals in moisture and maintains skin barrier integrity.

Glossy Priming Finish & Skin Compatibility

Engineered for smooth, daily wear under makeup, the serum sunscreen sets into a clear, dewy finish without a chalky white cast or sticky film. It evens out dry skin texture, creating a smooth, hydrated canvas that keeps foundation looking fresh and radiant without pilling.

Skin Type Suitable for all skin profiles, especially dry, dehydrated, normal, combination, and mature skin seeking a luminous, serum-hydrated finish.

Concerns Solved Skin dryness, solar dehydration, UVA/UVB photo-aging, fine lines, dullness, and sunscreen pilling under makeup.

Texture An ultra-fluid, watery serum emulsion that breaks into a hydrating liquid upon skin contact, absorbing cleanly to leave a dewy, smooth, and supple finish.

Usage Time Optimized for daily morning (AM) use as the final step in the skincare routine prior to sun exposure and makeup application.

Compatible Routines Fits seamlessly into hydrating, anti-aging, and brightening morning regimens. Apply over lightweight toners or serums, functioning as both a moisturizer and sunscreen primer before foundation.

Who Should Avoid It

• Extremely Oily/Matte Finish Preferences: Those with very oily skin who prefer a completely flat, powder-matte finish may find this formula's natural dewy glow too moisturizing.