Copper Peptides Serum
Copper Peptides Serum
Product Description
Product overview
A minimalist, science-driven copper peptide serum with only 6 clean ingredients. Combines GHK-Cu (0.10%) and Sodium Hyaluronate (1.5%) to boost collagen production, improve skin elasticity, and deeply hydrate — without fillers, fragrances, or unnecessary additives.
Collagen Boosting GHK-Cu
Copper Tripeptide-1 stimulates collagen, elastin, and glycosaminoglycan production to improve skin firmness and reduce fine lines.
Texture & feel
SENSORYCollagen Boosting GHK-Cu
Copper Tripeptide-1 stimulates collagen, elastin, and glycosaminoglycan production to improve skin firmness and reduce fine lines.
Deep Hydration with HA
1.5% Sodium Hyaluronate binds up to 1,000x its weight in water, drawing moisture into the skin for long-lasting plumpness.
Ultra-Minimalist Formula
Only 6 ingredients — no fillers, no fragrance, no dyes. Every ingredient serves a purpose for maximum potency without dilution.
Wound Healing & Repair
GHK-Cu has unique wound-healing properties, breaking down damaged scar collagen and promoting healthy new collagen synthesis.
Safety & compatibility
SAFENo retinoids, salicylic acid, hydroquinone, or chemical sunscreen filters. All 6 ingredients are considered safe during pregnancy and breastfeeding.
Free from ferments, fatty acids, esters, polysorbates, and oils. This ultra-clean formula will not feed malassezia yeast.
Contains no oils, waxes, or pore-clogging ingredients. Extremely low risk of causing breakouts or congestion.
Copper peptides and direct Vitamin C (L-Ascorbic Acid) can counteract each other. Use Vitamin C in the morning and copper peptides in the evening.
AHA/BHA exfoliants and retinol may reduce copper peptide effectiveness. Apply them at different times of day or on alternate nights.
Brand recommends testing a small amount on the neck before applying to the face, especially for those with reactive or sensitive skin.
Ingredient breakdown
INGREDIENTSCopper Tripeptide-1 (GHK-Cu) 0.10%Proven
A naturally occurring copper-peptide complex (glycine-histidine-lysine + copper) with unique wound-healing and skin-remodeling properties. Stimulates collagen, elastin, and glycosaminoglycan synthesis while providing significant anti-inflammatory and antioxidant benefits.
- Collagen Boost: A 1998 study found increased procollagen production in 7 out of 10 participants using copper tripeptide, outperforming Vitamin C and tretinoin.
- Wound Healing: GHK-Cu breaks down unhealthy, oversized collagen in scar tissue and stimulates healthy collagen replacement.
- Anti-Aging: Clinical studies show GHK-Cu can reduce wrinkle volume by up to 55% while improving skin elasticity and texture.
- Hair Growth: Research shows GHK-Cu enlarges hair follicles and keeps hair in its active growth phase longer.
Sodium Hyaluronate 1.5%Proven
The sodium salt form of hyaluronic acid — a powerful humectant naturally found in skin. It can bind up to 1,000 times its own weight in water, providing deep hydration and plumping the skin to reduce the appearance of fine lines.
- Hydration: Extensively studied humectant that draws and retains moisture in the skin's upper layers.
- Molecular Weight: Sodium hyaluronate has a smaller molecular size than pure HA, allowing for better skin penetration.
- Barrier Support: Helps maintain the skin's moisture barrier and prevents transepidermal water loss.
Pentylene GlycolPromising
A plant-derived (sugar beet) multifunctional ingredient that acts as a humectant, texture enhancer, and mild preservative. It helps draw moisture to the skin while keeping the formula microbe-free without traditional preservatives.
- Humectant: Attracts moisture from the surrounding environment to the skin's surface.
- Preservative Booster: Antimicrobial properties help create preservative-free formulas.
- Texture: Adds a smooth, lightweight feel to the serum without greasiness.
PhenylpropanolSupporting
A naturally occurring aromatic alcohol found in plants. Used here as a preservation booster with antimicrobial properties, allowing the formula to stay free of traditional preservatives like parabens.
- Preservation: Works synergistically with pentylene glycol to keep the formula stable and safe.
- Subtle Masking: Has a delicate floral scent that masks raw material odors but is undetectable in the finished product.
6 ingredients
Water, Pentylene Glycol, Phenylpropanol, Sodium Hyaluronate, Copper Tripeptide-1, Sodium Hydroxide.
Where it fits in your routine
ROUTINEApply after cleansing and toning on clean, dry skin. Use AM and/or PM. If using Vitamin C, apply it in the morning and this serum in the evening for best results.
How to use
HOW TO USECleanse & Dry
Start with clean, dry skin. Pat face dry after cleansing — this serum is designed to be applied to dry skin.
Dispense 2–4 Drops
Place a small amount into your palm or apply directly onto the face using the glass dropper.
Gently Massage
Using fingertips, gently massage the serum into the skin on your face, neck, and décolletage using upward motions.
Follow with Moisturizer
Layer a moisturizer or night cream on top to seal in the serum. Those with dry skin especially benefit from a heavier moisturizer or facial oil.
Who is it for?
WHOPerfect for you if:
- You want to target fine lines, wrinkles, and loss of firmness
- You prefer ultra-minimalist, no-filler formulas
- You have sensitive skin and want a fragrance-free serum
- You need a pregnancy-safe and fungal-acne-safe anti-aging treatment
- You value clean beauty with transparent ingredient lists
- You want a lightweight serum that layers well under other products
Consider alternatives if:
- You want a complex multi-peptide cocktail with many active technologies
- You need a standalone deeply moisturizing treatment for very dry skin
- You want a serum with built-in Vitamin C or retinol
- You prefer richer, cream-based textures over thin liquid serums
- You want a larger size — the 1oz bottle may feel small for daily use on face and body
Skin type compatibility
SKIN TYPESUltra-lightweight, water-based formula absorbs instantly with zero residue. No oils or silicones to add shine.
Provides hydration via hyaluronic acid, but very dry skin will need a richer moisturizer or facial oil layered on top.
Lightweight enough for oily T-zone while delivering hydration to drier cheeks. Balances perfectly across face zones.
Fragrance-free, minimal formula with only 6 ingredients. Patch test on neck first as recommended by the brand.
Non-comedogenic (0/5), fungal-acne safe, oil-free. GHK-Cu's anti-inflammatory properties may also help calm active breakouts.
Specifically formulated for aging concerns. GHK-Cu targets collagen loss, elasticity decline, and wrinkle formation.
Results timeline
MONTH 4–6Improved Hydration & Texture
Skin feels more supple and hydrated from the hyaluronic acid. Some users notice a smoother, softer skin surface and more even texture.
70% noticed improved hydrationEnhanced Glow & Plumpness
Skin begins to look more radiant and plump as copper peptides start stimulating collagen synthesis. Fine dehydration lines may appear reduced.
55% noticed visible glowFirmer, More Elastic Skin
Noticeable improvements in skin firmness and elasticity as sustained collagen and elastin production takes effect. Fine lines begin to soften.
60% noticed firming effectsSignificant Anti-Aging Results
With consistent use, deeper wrinkles appear reduced, skin tone becomes more even, and overall complexion looks noticeably younger and healthier.
50% noticed wrinkle reductionRatings by platform
3K+ REVIEWSPros & cons
BALANCEDPraised
- Ultra-clean 6-ingredient formula with no fillers or unnecessary additives
- Clinically studied GHK-Cu peptide at a declared 0.10% concentration
- Pregnancy safe, fungal acne safe, and non-comedogenic (0/5)
- Lightweight, fast-absorbing texture that layers beautifully under other products
- Fragrance-free and vegan — suitable for sensitive and reactive skin
- Noticeable improvement in skin firmness and hydration with consistent use
- Transparent ingredient labeling with exact percentages disclosed
Criticized
- 1oz bottle is small and may only last 3–4 weeks with twice-daily use
- Thin, watery texture may feel underwhelming for those expecting a rich serum
- 0.10% GHK-Cu is on the lower end — some competitors offer higher concentrations
- Cannot be mixed with Vitamin C in the same routine
- Results take 2–3 months of consistent use to become clearly visible
- No additional peptide technologies (only one peptide vs. multi-peptide alternatives)
Budget-friendly alternatives (dupes)
DUPESMore complex formula with 49 ingredients and 5 peptide technologies (GHK-Cu, Argireline, Matrixyl 3000, SYN-AKE). Richer texture but contains Lactococcus Ferment Lysate and Polysorbate 20 — NOT fungal acne safe.
Concentrated 1% GHK-Cu booster designed to be mixed into existing products. Only 0.5oz bottle. More versatile as a customizable additive but not a standalone serum with hydrating support.
Combines GHK-Cu with Argireline and Matrixyl 3000 for a multi-peptide approach. More ingredients and technologies but a busier formula. Includes hyaluronic acid. Good value for the multi-active approach.
Comparison with competitors
SIDE-BY-SIDESkin Perfection GHK-CU Serum
Storage & shelf life
12 MONTHS12 months after opening
Store out of direct sunlight in a cool, dry place. Keep out of reach of children. Avoid extreme temperatures.
Glass bottle with dropper applicator for precise, hygienic dispensing
Yes — 1 fl oz (30ml) is under the TSA 3.4oz / 100ml carry-on liquid limit
Frequently asked questions
FAQYes. This serum contains no retinoids, salicylic acid, hydroquinone, chemical sunscreen filters, or any other ingredients flagged as risky during pregnancy or breastfeeding. The ultra-minimal 6-ingredient formula (water, pentylene glycol, phenylpropanol, sodium hyaluronate, copper tripeptide-1, sodium hydroxide) is considered safe. However, always consult your healthcare provider before adding new products to your routine during pregnancy.
Yes. This serum is fully fungal acne safe. It contains no fermented ingredients, fatty acids, esters, polysorbates, or oils that feed malassezia yeast. With only 6 clean ingredients, it is one of the safest copper peptide options available for those prone to fungal acne.
Copper peptides should not be used at the same time as direct Vitamin C (L-Ascorbic Acid), as they can neutralize each other. Use Vitamin C in the morning and copper peptides in the evening. For retinol, AHAs, and BHAs, these can reduce copper peptide effectiveness — alternate them on different nights or apply acids first, wait 20–30 minutes, then apply the copper peptide serum.
This serum is suitable for all skin types. It is especially excellent for oily, combination, acne-prone, and mature skin due to its lightweight, non-comedogenic, oil-free formula. Dry skin types will benefit from layering a richer moisturizer on top. Sensitive skin types should patch test on the neck first.
Most users notice improved hydration and texture within 1–2 weeks. Visible improvements in firmness, elasticity, and fine line reduction typically appear after 2–3 months of consistent twice-daily use. Significant anti-aging results are generally reported at the 4–6 month mark. Patience and consistency are key with peptide-based treatments.
Apply after cleansing and toning, but before moisturizer, facial oil, and sunscreen. Apply to clean, dry skin. It can be used both morning and evening. If using Vitamin C, apply it in the AM and this serum in the PM. Follow with a moisturizer to seal in the benefits.
No. This serum has a comedogenic rating of 0/5. It contains no oils, waxes, silicones, or any known pore-clogging ingredients. The water-based, ultra-lightweight formula is non-comedogenic and safe for acne-prone skin. It is also free from polysorbates and fatty esters.
The serum has a Period After Opening (PAO) of 12 months. Store it out of direct sunlight in a cool, dry place for optimal shelf life. The glass dropper bottle helps protect the formula from contamination and light degradation. With twice-daily use, the 1oz bottle typically lasts 3–4 weeks.
Verdict: Asterwood Copper Peptides Serum is a standout choice for minimalist skincare enthusiasts who want a clean, science-backed copper peptide treatment without the fuss of complex formulas. Its ultra-short 6-ingredient list is unmatched in the category, making it one of the safest options for sensitive, acne-prone, and fungal-acne-prone skin. The disclosed 0.10% GHK-Cu concentration is on the lower side compared to competitors at 1%, but the simplicity means fewer potential irritants and interactions. It earns points for transparency, pregnancy safety, and value — but loses some for the small bottle size and thin texture that may feel insufficient for dry skin. Best suited as a targeted peptide step in a multi-product routine rather than a do-it-all serum.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 1 |
Pentylene Glycol
Solvent, Skin Conditioning
|
|
|
| 0 |
Phenylpropanol
Masking, Perfuming, Solvent
|
|
|
| 1 |
Sodium Hyaluronate
Skin Conditioning, Humectant
|
Promotes Wound Healing
Hydrating
|
|
| 0 |
Copper Tripeptide-1
Skin Conditioning
|
Promotes Wound Healing
Hydrating
Texture
|




