Peptides are short chains of amino acids — the same building blocks that make up the proteins already in your skin. Because they're small and water-soluble, they absorb well and pair naturally with Hyaluronic Acid, which is why every Asterwood peptide formula starts with a hydration base. Different peptides send different signals to skin, which is exactly why Asterwood formulates with several instead of just one.

Start with one peptide, one goal — not the whole shelf at once. Pick based on what you actually want to see change, use it consistently for a few weeks, then build from there.

• General firmness, texture, and early fine lines? Start with Copper Peptides Serum. It's Asterwood's most beginner-friendly formula — just 6 ingredients built around a single hero peptide (GHK-Cu), fragrance-free, and gentle enough to slot into any existing routine without changing anything else.
• Specifically targeting expression lines around the eyes, forehead, or mouth? Start with Argireline Serum instead — it's formulated for that exact concern.
• Want collagen support and expression-line targeting in one step? Triple Repair Serum already combines Matrixyl® 3000 and Argireline®, so you get both without layering two separate products.

Whichever you choose, apply it AM and/or PM as directed and give it 4–8 weeks of consistent use before judging results — peptides work gradually, not overnight. Once your skin is used to one, layering in a second peptide (like adding Copper Peptides under a Matrixyl® 3000 cream) is easy: apply serums before creams, thinnest to thickest.

Yes — Asterwood is built for mixing and matching. Different peptides target different concerns, so layering them doesn't cancel anything out; it stacks the benefits. A common routine pairs Copper Peptides Serum (GHK-Cu) with Argireline Serum, or either with a Matrixyl® 3000 formula like Triple Repair Serum. Apply thinnest to thickest — serums before creams — and give each layer a few seconds to absorb before the next step.

The one thing to separate into different steps or alternate days: strong AHA/BHA exfoliants and high-dose Vitamin C. Peptides are stable and gentle enough to layer with almost anything, but acids and peptides work best when they're not competing in the same application.

• Peptides layer well with each other and with Hyaluronic Acid
• Space out strong AHA/BHA and high-dose Vitamin C into separate steps or AM/PM routines
• Always finish your morning routine with SPF

Copper peptides are small protein fragments bonded to a copper ion. GHK-Cu (Copper Tripeptide-1) is the specific one Asterwood uses, and it's one of the most extensively studied peptide actives in dermatology — the body produces it naturally, and levels decline with age, which is part of why it's such a well-researched topical active.

Asterwood's Copper Peptides Serum builds around GHK-Cu at 0.10%, paired with 1.50% Sodium Hyaluronate in a 6-ingredient, fragrance-free formula:

• Helps visibly improve the appearance of skin firmness and elasticity
• Supports a visibly smoother, more even skin texture
• May help reduce the appearance of fine lines with consistent use
• Delivers immediate, lasting hydration from high-dose Hyaluronic Acid
• Ultra-lightweight and fast-absorbing — no residue, no pilling

One fun fact worth knowing: the serum's natural blue-green tint isn't a dye — it's a visual sign that active GHK-Cu is actually in the bottle. For the full system, Copper Peptides Booster Cream layers on top to lock in hydration and reinforce the moisture barrier.

Matrixyl® 3000 is a two-peptide complex — Palmitoyl Tripeptide-1 and Palmitoyl Tetrapeptide-7 — that signals skin to produce more collagen. More collagen means visibly firmer, smoother-looking skin over time.

• Stimulates collagen production and enhances skin elasticity
• Visibly reduces the appearance of fine lines and wrinkles
• Promotes skin repair and improves firmness

You'll find it in Triple Repair Serum (paired with Argireline® and Vitamin C) and Triple Repair Cream (at 3%, for PM use).

Argireline® (Acetyl Hexapeptide-8) is the topical peptide built specifically for expression lines — the fine lines that form around the eyes, forehead, and mouth from repeated facial movement. It's formulated to target facial tension at the source, softening the look of those dynamic wrinkles rather than just hydrating over them.

• Visibly softens expression lines around eyes, forehead, and mouth
• Clinical data: 20.6% reduction in wrinkle volume in 1 week (in vivo study, 24 volunteers ages 35–45, twice-daily use)
• Fast-absorbing and layers cleanly under moisturizer or SPF

Asterwood's Argireline Power-Peptide Serum runs it at a 2% concentration alongside 1% Hyaluronic Acid, in a focused, 6-ingredient formula.

Both are peptide technologies from the same ingredient family, but they're built differently and do different jobs:

• Matrixyl® 3000 is a two-peptide complex (Palmitoyl Tripeptide-1 + Palmitoyl Tetrapeptide-7) focused on stimulating collagen production and improving firmness and elasticity. You'll find it in Triple Repair Serum and Triple Repair Cream.
• Matrixyl® Synthe'6® is a newer, single-peptide technology (Palmitoyl Tripeptide-38) that supports skin's natural repair process and helps smooth fine lines and wrinkles. Asterwood uses it in Peptide Barrier Gel Cream (also called Cica Peptide Gel Cream), a lightweight formula built for oily, combination, and acne-prone skin.

Think of Matrixyl® 3000 as the
peptide for bounce, elasticity, and all-around repair: it firms and smooths
while helping skin spring back. Matrixyl® Synthe'6® takes on a different job,
targeting deeper wrinkles and structural density, in a lighter-weight,
breathable, non-comedogenic formula.