Best Alastin Products for Hydration and Dryness
If dryness and dehydration are your main concern, Alastin's routine pairs two products rather than picking one: HA IMMERSE Serum (£100/30ml) for lightweight hyaluronic acid hydration as your first step, and Ultra Nourishing Moisturiser (£65/59ml) as the richer final step that seals it in. They're designed to work together, not as alternatives.
The order that actually works: hydrate first, seal it in second
Dry skin and dehydrated skin aren't quite the same thing, and Alastin's range treats them as two separate jobs. HA IMMERSE Serum is a hyaluronic-acid formula, applied to damp skin straight after cleansing, whose role is to draw water into the surface. Ultra Nourishing Moisturiser goes on last, over the serum, to lock that hydration in and add the richer, emollient layer that a lightweight serum alone doesn't provide. Both formulas are built around Alastin's TriHex Technology® platform, which the brand positions as helping improve the appearance of skin's texture and hydration over time — this is Alastin's own framing of the mechanism, not an independent clinical claim.
1. Alastin HA IMMERSE Serum™ 30ml — step one, hydration
| Key active | Sodium Hyaluronate (Hyaluronic Acid) |
|---|---|
| Secondary actives | Hexapeptide-11, Tremella Fuciformis Sporocarp Extract, Xylitylglucoside/Anhydroxylitol/Xylitol Complex |
| Size | 30ml |
| Texture | Lightweight, fast-absorbing, non-tacky |
| Skin types | All, including sensitive, dry, oily, combination and acne-prone |
| Frequency | Twice daily, first step after cleansing |
| Fragrance | Fragrance-free |
| Price | £100 |
In Alastin's own 46-participant study, 98% of participants reported immediately smoother skin after use — this is the brand's reported result from its own testing, not an independently verified figure, and we're stating it as such. The serum is also positioned by Alastin for use every 2–3 hours in the first 48 hours after a cosmetic procedure; if that applies to you, follow your practitioner's own protocol over any generic timing given here.
2. Alastin Ultra Nourishing Moisturiser™ 59ml — step two, seal it in
| Key active | DATA GAP — Alastin has not published a primary active ingredient for this product |
|---|---|
| Confirmed supporting actives | Bisabolol, Tocopherol (Vitamin E) |
| Size | 59ml |
| Texture | Rich, nourishing, dewy finish |
| Skin types | All, including sensitive |
| Frequency | Twice daily, final step of the routine — avoid the immediate eye area |
| Fragrance | Fragrance-free |
| Price | £65 — the most affordable product in the Alastin range |
Alastin's own 12-week, multi-centre study reported 91% patient satisfaction with improvements in texture and hydration — again, this is the brand's own reported outcome. At £65, it's also the lowest-priced product in the Alastin catalogue, which makes it a reasonable way to trial the brand if a full routine isn't in budget yet. Its “rich, dewy finish” positioning means it isn't the right choice for oily or acne-prone skin wanting a lightweight feel — for that skin type, HA IMMERSE Serum alone, without the moisturiser layered on top, is the better fit.
How to layer them
- Cleanse, then apply HA IMMERSE Serum to damp skin
- Allow it to absorb for a minute or so
- Follow with Ultra Nourishing Moisturiser as the final step, avoiding the immediate eye area
- In the morning, follow with SPF as usual
Because the two products are formulated to sit in this order, there's no need to choose between them if dryness is genuinely your concern — they cover different parts of the same problem rather than competing for the same step in your routine.
Who this pairing suits
Dry or dehydrated skin wanting a two-step routine, and anyone told by their practitioner to keep skin well hydrated around a cosmetic procedure, are the clearest fit here. If you're after a peptide-led anti-ageing serum rather than a hydration-focused one, Alastin's Restorative Skin Complex is the product built for that instead — it isn't a substitute for this pairing, but it answers a different question.
If you're pregnant or breastfeeding, please contact our team for advice before use.
Frequently asked questions
Do I need both HA IMMERSE Serum and Ultra Nourishing Moisturiser, or just one?
For dryness specifically, Alastin designs these as a pair — the serum hydrates, the moisturiser seals it in. Oily or acne-prone skin can use HA IMMERSE Serum alone without the moisturiser on top.
What order do I apply Alastin HA IMMERSE Serum and Ultra Nourishing Moisturiser?
Serum first, onto damp skin straight after cleansing, then the moisturiser as your last step.
Is Alastin Ultra Nourishing Moisturiser good for sensitive skin?
Alastin lists it as suitable for all skin types including sensitive, and it's formulated fragrance-free.
Can I use this pairing after a cosmetic procedure?
Alastin positions HA IMMERSE Serum for use in the first 48 hours after a procedure, at a higher frequency than daily use. Always follow your own practitioner's directions over general guidance like this.
What's the cheapest way to start with Alastin for dry skin?
Ultra Nourishing Moisturiser, at £65, is the lowest-priced product in the Alastin range and a reasonable single-product starting point if a full routine isn't in budget yet.