Alastin Skincare Guide | TriHex Technology®

Alastin is a US clinic-grade skincare brand built around a single patented mechanism: TriHex Technology®, a peptide complex (see our glossary entry on peptides) formulated to help support the skin's own clearance of damaged collagen and elastin so new collagen can form. Most people encounter the brand in one of two ways — sent by an injector or practitioner to buy "the Alastin serum" after a procedure, or browsing anti-ageing serums and getting stuck on near-identical names like Restorative Skin Complex, Restorative Neck Complex and Regenerating Skin Nectar. This guide sorts the range by what you're actually trying to do, not by which name sounds most familiar.

Alastin at a glance

Formulated	United States
Core mechanism	TriHex Technology® — a patented peptide complex used across almost the whole range
Typical customer	Cosmetic-procedure patients (fillers, lasers, peels, microneedling) and anti-ageing skincare shoppers
Range size at Skintique	10 active products
This guide covers	9 in-depth reviews, 4 buying guides and 3 head-to-head comparisons

What is TriHex Technology®?

TriHex Technology® is Alastin's name for the peptide complex that runs through almost the entire range, in different concentrations and formats depending on the product. In plain English: it's formulated to help support the skin's own natural process of clearing out damaged collagen and elastin, which is a necessary step before new collagen can form. That's the mechanism behind most of the brand's before-and-after positioning, and it's why the same underlying blend shows up in a neck cream, a facial serum, a body lotion and a post-injection serum alike. This is Alastin's own patented formulation and its own clinical positioning — where an individual product review on this site cites a specific result, we attribute it explicitly to Alastin's own testing rather than presenting it as independently verified by Skintique.

Why practitioners recommend Alastin around procedures

Aesthetic practitioners often recommend Alastin specifically in the window around a cosmetic procedure — fillers, lasers, peels, microneedling — because two products in the range, INhance Post-Injection Serum and Regenerating Skin Nectar, are formulated for that exact use-case, with directions built around a practitioner-led timeline rather than a standard twice-daily skincare routine. That's a general observation about how the brand is positioned in clinics, not a recommendation from Skintique to start or stop any Alastin product around a procedure without checking with your own practitioner first.

Three ways to shop the range

Alastin's ten products sort more easily by what you need than by name. We've grouped the nine we've reviewed in depth into three categories below: an everyday anti-ageing routine, a procedure-specific serum, or a product for a targeted area — neck, eyes or body. Skip to whichever applies to you.

Everyday anti-ageing

For a daily routine rather than a procedure-specific need, this is where most people start. Several of these lean on Niacinamide (see our glossary entry) alongside TriHex Technology®:

Restorative Skin Complex — the brand's flagship daily peptide serum, built on the expanded TriHex+™ complex
A-LUMINATE Brightening Serum — a hydroquinone-free brightening serum for uneven tone
HA IMMERSE Serum — a hyaluronic-acid hydrating serum, designed as the first step of a routine
Ultra Nourishing Moisturiser — the range's richest daily moisturiser, and its most affordable product

Before and after a procedure

Two products are built specifically around a cosmetic-procedure timeline rather than everyday use:

INhance Post-Injection Serum — injectables-specific, cooling applicator-tip format, used around four times daily for roughly ten days
Regenerating Skin Nectar — a broader pre- and post-procedure serum covering laser, peel, microneedling and injectables, also used long-term by some as a daily serum

HA IMMERSE Serum, listed above, is also used in the first 48 hours after a procedure per Alastin's own directions — see our best Alastin products for before and after a procedure guide for how the three fit together.

Targeted areas — neck, eyes and body

Three products apply the same TriHex mechanism to a specific zone rather than the whole face:

Restorative Neck Complex — a dedicated neck and décolletage cream
Restorative Eye Complex — a slow-build eye cream; Alastin's own directions cite four to six months for the most noticeable results, so this isn't a fast fix
TransFORM Body Treatment — a body-only lotion, explicitly not formulated for facial use

If this is your first Alastin product

Several of the range's core anti-ageing serums sit at the premium end of the brand — Restorative Skin Complex and Regenerating Skin Nectar are both priced similarly to each other, at the top of the range — which isn't necessarily the easiest way to trial Alastin for the first time. Ultra Nourishing Moisturiser is the range's most affordable product, and HA IMMERSE Serum is a lower-commitment hydrating step that layers well alongside almost anything else in the range. Neither replaces the peptide-dense serums if that's specifically what you're after, but both are a reasonable way to get a feel for the brand's texture and finish before committing to a higher-priced product.

Confusing names, sorted

Alastin's naming is the single biggest source of confusion in the range — several products sound like they overlap when their formats, actives and use-cases are genuinely quite different. We've written three direct comparisons to answer the "which one do I actually need" question:

Restorative Skin Complex vs Restorative Neck Complex — same mechanism, different zone (face vs neck) and different price
INhance Post-Injection Serum vs Regenerating Skin Nectar — the range's most-asked comparison, resolved
A-LUMINATE Brightening Serum vs SkinCeuticals Discoloration Defense — two hydroquinone-free brightening serums, compared side by side

Buying guides by concern

If you're shopping by skin concern rather than product name, these guides group the range accordingly:

A note on the wider range

Alastin also sells an antioxidant serum, C-Radical Defense, which is stocked on skintique.co.uk. We're not publishing a standalone review of it yet: its published ingredient data currently duplicates another product in the range rather than reflecting its own formulation, so until that's corrected we can't confirm what it actually contains. We'd rather flag that honestly than guess at its actives.

Pregnancy and breastfeeding

Alastin's product listings don't consistently state pregnancy or breastfeeding guidance across the range. If you're pregnant or breastfeeding, please contact our team for advice before use.

Our approach

Every fact in this guide and the reviews it links to comes from the product's own Shopify listing or Alastin's official product documentation, not marketing copy we can't stand behind. Where Alastin cites a clinical result from its own testing, our reviews say so explicitly rather than presenting it as an independently verified or Skintique finding. We don't run star ratings or aggregate review scores on these pages; they're independent breakdowns to help you shop the range, not a review-platform score. And because Alastin's range sits so close to cosmetic-procedure aftercare, we'd always rather point you to your own practitioner's protocol and a conversation with our team than guess at timing or suitability ourselves.