Alastin Restorative Skin Complex vs Restorative Neck Complex
Updated Aug 20, 2026
The Verdict
These aren't rival products — they're a matched pair built on the same TriHex foundation for two different areas. Restorative Skin Complex is the daily peptide serum for facial skin; Restorative Neck Complex is the richer, purpose-built cream for the neck and décolletage. Choose based on where your concern actually is, and treat the two as complementary rather than either-or if your budget stretches to both.
Restorative Skin Complex and Restorative Neck Complex share the same TriHex-based peptide technology and a twice-daily routine, but they're formulated for different areas: Skin Complex (£180) targets facial skin, while Neck Complex (£105) is a richer cream built for the neck and décolletage. Most people don't need to choose between them — they're designed to be used together, not as alternatives.
Restorative Skin Complex vs Restorative Neck Complex at a glance
| Restorative Skin Complex™ | Restorative Neck Complex® | |
|---|---|---|
| Area of use | Face | Neck and décolletage |
| Price | £180 / 29.6ml | £105 / 50ml |
| Core technology | TriHex+™ (expanded peptide complex) | TriHex Technology® |
| Texture | Lightweight serum | Richer, cream-based, for lower oil-gland density |
| Frequency | Twice daily | Twice daily, upward strokes |
| Skin types (per PDP) | Oily, combination, dry | Oily, combination, dry, sensitive |
| Fragrance | Not confirmed fragrance-free — data gap | Fragrance-free (confirmed) |
What they have in common
Both products sit in Alastin's Restorative line and are built around the brand's TriHex family of peptide-antioxidant technology, formulated to help support the skin's own process of clearing out damaged collagen and elastin so newer, healthier protein can form. Both are applied twice daily, morning and evening, and both include niacinamide as a supporting active. Neither makes any claim to replace sun protection, and both are positioned by Alastin as suitable for use alongside in-clinic procedures, subject to your practitioner's own timing advice.
Where they differ
Formulated zone
This is the core difference. Skin Complex is formulated for facial skin. Neck Complex is a distinct formula — not a diluted or repackaged version of the facial product — built specifically for the neck and chest, an area with thinner skin, fewer oil glands and different movement patterns to the face. Alastin doesn't recommend using either product outside its intended zone.
TriHex Technology® vs TriHex+™
Neck Complex uses Alastin's original TriHex Technology®. Skin Complex uses TriHex+™, described by Alastin as an expanded version of the same peptide complex. Both work on the same underlying principle; the “+” reflects a broader peptide profile in the facial formula rather than a different mechanism.
Texture and skin type
Skin Complex is a lightweight serum, formulated for oily, combination and dry skin per its product listing — it doesn't explicitly list “sensitive” among its stated skin types, unlike most of the wider Alastin range. Neck Complex is a richer, cream-based texture designed to compensate for the neck's naturally lower oil-gland density, and its listing explicitly includes sensitive skin alongside oily, combination and dry.
Price
Skin Complex is £180 for 29.6ml. Neck Complex is £105 for 50ml — a larger volume at a lower price, reflecting the different cost of formulating and packaging each product rather than one being a “budget” version of the other.
Ingredients side by side
| Restorative Skin Complex™ | Restorative Neck Complex® | |
|---|---|---|
| Headline actives | Niacinamide, Palmitoyl Tripeptide-5 | Niacinamide, Peptides (incl. Acetyl Tetrapeptide-2) |
| Supporting actives | Palmitoyl Hexapeptide-12, Palmitoyl Tripeptide-1, Acetyl Hexapeptide-38, Tremella Fuciformis Sporocarp Extract, Ceramide AP and Ceramide NP | Phytoene and Phytofluene, Ceramides (Ceramide NP type), Flax Seed Extract, Plantain Leaf Extract |
Both formulas lean on Niacinamide and a supporting cast of peptides alongside ceramides for barrier support, but the exact peptide blend and supporting antioxidants differ by zone-specific formulation rather than one being a stripped-down version of the other.
Which one should you choose
If your main concern is on your face — fine lines, loss of firmness, uneven tone or dullness — Restorative Skin Complex is the one to start with. If your concern is specifically your neck and chest — crepey texture, horizontal creases, sagging or dullness across the décolletage — Restorative Neck Complex is the purpose-built option; using a facial serum on the neck won't deliver the same result, since it isn't formulated for that skin's different oil content and thickness. If you're noticing signs of ageing in both areas, which is common, the two are designed to be used together rather than as a substitute for one another.
Can you use both together?
Yes. Because both sit within the same TriHex family and don't conflict on actives, applying Skin Complex to the face and Neck Complex to the neck and décolletage as part of the same twice-daily routine is exactly how Alastin positions the pair. A simple approach is to apply each to its own zone after cleansing, then follow with a moisturiser and, in the morning, SPF — extending sun protection down to the neck and chest is worth doing regardless of which Restorative product you use.
If you're pregnant or breastfeeding, please contact our team for advice before use.
Our verdict
Restorative Skin Complex and Restorative Neck Complex aren't competing products — they're the same underlying TriHex approach, split across two zones with genuinely different formulation needs. Skin Complex is the lighter, peptide-dense serum for facial skin; Neck Complex is the richer cream built for an area that's usually left out of a skincare routine altogether. Pick based on where your concern actually sits, and treat the two as a pair rather than a choice if you're building out a full TriHex routine.
FAQs
What's the difference between Restorative Skin Complex and Restorative Neck Complex?
They're formulated for different areas. Skin Complex is a lightweight serum for the face, using TriHex+™. Neck Complex is a richer cream for the neck and décolletage, using the original TriHex Technology®. Both are applied twice daily.
Can I use Restorative Skin Complex on my neck instead of Neck Complex?
Alastin formulates the two products for different skin types and needs, and doesn't recommend using either outside its intended zone. Neck Complex is formulated specifically for the neck's lower oil-gland density.
Do I need to buy both, or can I choose just one?
You can use either on its own for its intended zone. If ageing concerns show up on both your face and neck, using both together is how Alastin positions the pair, but it's not a requirement to start with just one.
Which one is fragrance-free?
Restorative Neck Complex is confirmed fragrance-free. Restorative Skin Complex's fragrance status isn't confirmed either way on its current product listing, so we haven't stated it as fragrance-free here.
Is Restorative Skin Complex or Neck Complex better value?
They're not directly comparable on price alone, since they're different formulas for different areas at different volumes. Neck Complex costs less per bottle (£105 vs £180) and comes in a larger 50ml size, but that reflects the different formulation, not a lesser product.
Can I use both in the same routine?
Yes — apply Skin Complex to the face and Neck Complex to the neck and décolletage as part of the same twice-daily routine. There's no ingredient conflict between them.