Alastin - HA Immerse Serum

Hydration That Goes Deeper — Alastin HA Immerse Serum 30ml

Most hyaluronic acid serums sit on the surface. Alastin HA Immerse works differently — combining high-molecular-weight hyaluronic acid for instant surface hydration with a proprietary Octapeptide-45 that signals the skin to produce more of its own hyaluronic acid deep within the dermis. The result is hydration that isn't just felt immediately — it compounds over time.

Winner of New Beauty's "Best Hyaluronic Acid" award and Oprah Daily's 2022 O-ward for "Best Hydrating Serum" — independently recognised as one of the most effective hydrating serums available.

Dual-Action Hydration Technology

Most serums address hydration at one level. HA Immerse addresses it at two:

• Instant surface hydration — high-molecular-weight HA forms a moisture-binding film on the skin's surface, immediately smoothing and plumping the appearance of fine lines
• Long-term deep hydration — Octapeptide-45 stimulates the skin's own fibroblasts to increase endogenous hyaluronic acid production within the dermis, delivering sustained plumping and anti-ageing benefits that build with continued use

Key Benefits

• 💧 Instantly boosts surface hydration — skin feels smoother and more radiant from first application
• 🧬 Stimulates natural HA production — Octapeptide-45 increases the skin's own hyaluronic acid levels over time
• ⏱️ Reduces fine lines and wrinkles — long-term plumping effect minimises the appearance of lines
• ✨ Improves overall skin appearance — 91% of participants agreed after just 4 weeks
• 💉 Complements dermal fillers — recommended for use alongside hyaluronic acid filler treatments to extend and enhance results
• 🏆 Award-winning formula — recognised by New Beauty and Oprah Daily as best-in-class
• 🌿 Suitable for daily use — gentle enough for morning and evening application

Key Ingredients

High-Molecular-Weight Hyaluronic Acid

Sits on the skin's surface to form a moisture-binding film that instantly smooths texture, reduces the appearance of fine lines, and gives skin an immediate plump, dewy appearance. High-molecular-weight HA is less likely to cause irritation than low-molecular-weight variants, making it ideal for sensitive and reactive skin types.

Octapeptide-45 (Proprietary)

Alastin's proprietary peptide that works at the dermal level to stimulate fibroblasts — the cells responsible for producing hyaluronic acid, collagen, and elastin. By increasing the skin's endogenous HA production, Octapeptide-45 delivers long-term hydration and anti-ageing benefits that go beyond what topical HA alone can achieve.

Clinical Results

98% of study participants agreed HA Immerse made their skin feel smooth immediately after applying^*+

91% of participants agreed HA Immerse replenished the moisture in their skin after 4 weeks of use⁺

91% of participants agreed HA Immerse improved the overall appearance of their skin after 4 weeks of use⁺

^*Subject assessment completed 15 minutes post application. ⁺Subject questionnaire completed at weeks 2 and 4.

How to Use

Apply 1–2 pumps to the face morning and evening, after cleansing and before moisturiser or SPF. Can be layered with other Alastin serums or used as a standalone hydrating step. Avoid contact with the eyes — if contact occurs, rinse thoroughly with water.

Frequently Asked Questions

What makes Alastin HA Immerse different from other hyaluronic acid serums?

Most HA serums rely solely on topical hyaluronic acid to hydrate the skin's surface. HA Immerse goes further — its proprietary Octapeptide-45 stimulates the skin's own fibroblasts to produce more hyaluronic acid internally, delivering long-term hydration and plumping benefits that compound with continued use rather than washing off with your next cleanse.

Can I use HA Immerse alongside dermal fillers?

Yes — HA Immerse is specifically recommended as a complement to hyaluronic acid dermal filler treatments. By increasing the skin's natural HA levels, it helps maintain and extend the results of filler treatments between appointments. Many aesthetic clinicians recommend it as part of a post-filler maintenance routine.

Is HA Immerse suitable for oily or acne-prone skin?

Yes. The formula is lightweight and non-comedogenic. Hyaluronic acid is well-tolerated by all skin types, including oily and acne-prone skin, as it hydrates without adding oil or occluding pores.

Can I use HA Immerse with other Alastin products?

Absolutely. HA Immerse layers well with Alastin's full range, including Restorative Skin Complex and Skin Nectar. Apply HA Immerse first (thinnest consistency), followed by heavier serums or moisturisers.

How quickly will I see results?

Immediate surface smoothing is noticeable within 15 minutes of first application. Deeper hydration and visible improvements in fine lines and overall skin appearance are typically seen within 2–4 weeks of consistent daily use.

Further Information

Product formulations may be updated from time to time. For accurate ingredient information, refer to your product packaging. For personalised skincare advice, consult one of our skincare specialists.