Neutrogena Hydro Boost Ultra Hydrating Serum with Hyaluronic Acid — Fragrance-Free 1 fl oz, Lightweight Deep Hydration

Neutrogena Hydro Boost Ultra Hydrating Serum is a lightweight, fragrance-free hyaluronic acid serum that delivers deep, non-greasy hydration to soften and refresh skin.

This one-fluid-ounce recyclable glass bottle contains a clinically tested formula designed to replenish and help retain moisture on the skin’s surface. The serum pairs high-performing hyaluronic acid with Natural Moisturizing Factors — including amino acids and electrolytes — to attract and hold water where skin needs it most. The fast-absorbing texture layers easily under moisturizers and makeup, and the non-comedogenic, fragrance- and dye-free formula suits dry, sensitive, and acne-prone skin types.

How does this serum hydrate without feeling heavy?

The Hydro Boost serum uses hyaluronic acid, a small-molecule hydrator that binds water to skin cells for immediate plumping without a greasy finish. The formula absorbs quickly, leaving a weightless, dewy feel that supports surface hydration for hours.

• Hyaluronic acid attracts and holds moisture within the skin’s surface.
• Natural Moisturizing Factors (amino acids, electrolytes) help restore moisture balance.
• Light, fast-absorbing texture layers under creams and makeup without pilling.

What visible results can I expect and when?

Clinical testing shows immediate improvement in hydration and skin feel, with more noticeable softness in the first two weeks and increased resilience after four weeks of daily use. Results depend on consistent application and your skin’s starting condition.

• Instant boost in moisture and smoother surface texture on application.
• Visible softening and revitalized feel after about two weeks of regular use.
• Enhanced skin resilience reported after roughly four weeks of daily use.

Is this serum safe for sensitive or acne-prone skin?

The formula is free of fragrance, dyes, parabens, and phthalates and is non-comedogenic, so it’s formulated to minimize irritation and avoid clogging pores. Still, patch testing on a small area is recommended if you have highly reactive skin.

• Fragrance- and dye-free to reduce irritation risk.
• Non-comedogenic to help prevent pore blockage.
• Suitable for layering in routines for dry, sensitive, and acne-prone skin types.

How should I use this serum in my skincare routine?

Apply the serum to clean skin once or twice daily, spreading evenly across face and neck. Follow with your regular moisturizer and sunscreen in the morning for protection and to lock in hydration.

• Use after cleansing and before moisturizing for best results.
• A little goes a long way—dispense one to two pumps for full-face coverage.
• Incorporate into morning and evening routines to maintain consistent hydration.

Who is this for: Neutrogena Hydro Boost Ultra Hydrating Serum suits anyone seeking a lightweight, effective hydrator that complements sensitive or acne-prone skin. It’s ideal for people with dryness or dehydration, those who prefer fragrance-free skincare, and anyone who wants to layer a quick-absorbing serum under moisturizers and makeup. The recyclable glass bottle also appeals to shoppers mindful of packaging choices.