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Ready-to-use 30 mL topical research serums: GHK-Cu copper peptide serum, Noctura (melatonin, apigenin, GABA) and Ceralux (arbutin, hyaluronic acid, vitamin C, ceramide).

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Peptide Serums for Topical Research

This collection covers our ready-to-use topical research serums: a GHK-Cu copper peptide serum, the Noctura nighttime serum and the Ceralux 4-in-1 serum. Each comes in a 30 mL dropper bottle, in liquid form for ease of application and stability, with its full composition listed on the product page.

What Is a Peptide Serum?

A peptide serum is a liquid topical formulation that combines research peptides or active compounds with hydrating and supporting ingredients. Serums are used in topical research models, such as skin explants and skin-structure studies, where the formulation is applied to a surface rather than prepared from powder. All serums are sold strictly for laboratory research and are not for human or veterinary use.

GHK-Cu Peptide Serum

Our copper peptide serum is built around GHK-Cu, a naturally occurring copper peptide studied for collagen production, skin elasticity and the skin's own hyaluronic acid production. The formula also contains:

  • Hyaluronic acid, a humectant that draws moisture into the skin
  • SNAP-8, listed on the label alongside GHK-Cu and hyaluronic acid
  • Dipeptide (DBD), palmitoyl pentapeptide-3 and hexapeptide-9, studied for wrinkle appearance, collagen production and tissue repair
  • DMAE, studied for skin firmness
  • Dimethyl isosorbide, a transdermal agent that carries ingredients into the upper epidermis
  • A base of vegetable glycerin and ultra-pure Milli-Q water, preserved with paraben-free Optiphen

Noctura Serum (Melatonin, Apigenin, GABA)

Noctura is a nighttime research serum for studies of sleep-cycle regulation, relaxation pathways and overnight cellular recovery. Melatonin is widely studied for its role in circadian timing, apigenin for its calming, neuro-supportive properties, and GABA, a key inhibitory neurotransmitter, for relaxation and reduced neuronal excitability in topical research models.

Ceralux Serum (Arbutin, Hyaluronic Acid, Vitamin C, Ceramide)

Ceralux is a 4-in-1 serum for studies of skin tone, hydration and barrier repair. Arbutin and vitamin C are researched for their role in regulating pigmentation, melanin synthesis and antioxidant defense; hyaluronic acid for moisture binding and suppleness; and ceramide for reinforcing the skin's lipid barrier and reducing transepidermal water loss.

Which Serum Fits Your Research?

Serums vs. Peptide Vials and Capsules

GHK-Cu is also available as a lyophilized vial (50 or 100 mg) and inside the Glow and Klow blends. The vial suits studies that prepare their own solutions, while the serum combines GHK-Cu with supporting ingredients in a finished topical formula.

Key Terms in Topical Serum Research

  • Humectant: an ingredient, such as hyaluronic acid or vegetable glycerin, that draws in and holds moisture.
  • Transdermal agent: an ingredient, such as dimethyl isosorbide, that helps other ingredients pass into the upper epidermis.
  • Lipid barrier: the skin's protective outer layer, which ceramide is studied for reinforcing.
  • Transepidermal water loss (TEWL): the water that escapes through the skin, a common measure in barrier research.

Testing and Lot Documentation

Each serum's product page shows the status of the current lot's certificate of analysis. Until a lot's certificate is published, the page reads "Lot COA coming soon"; published certificates are added to our COA library, searchable by compound or lot number.

How to Store Research Serums

Store serums below 25 °C, away from direct light, and keep the bottle capped. Use a clean dropper for every draw to avoid contaminating the formula.

Ordering Research Serums in the USA

We ship within the United States Monday through Thursday, with same-day dispatch on orders placed by 2 PM ET and free shipping on orders of $150 or more (Alaska and Hawaii excluded). Order 3 or more of the same serum for 8% off, or 5 or more for 12% off, applied automatically in the cart.

Peer-reviewed studies on GHK-Cu and topical peptide models are indexed on PubMed, the research database of the US National Library of Medicine.

Answers

Frequently Asked Questions

What is a peptide serum?

A peptide serum is a liquid topical formulation that combines research peptides or active compounds with hydrating and supporting ingredients, for use in topical research models.

What is in the GHK-Cu Peptide Serum?

GHK-Cu, hyaluronic acid and SNAP-8, with dipeptide (DBD), palmitoyl pentapeptide-3, hexapeptide-9, DMAE, dimethyl isosorbide, vegetable glycerin, Milli-Q water and the paraben-free preservative Optiphen.

What is Noctura Serum studied for?

Noctura combines melatonin, apigenin and GABA for research on sleep-cycle regulation, circadian timing, relaxation pathways and overnight cellular recovery in topical models.

What is Ceralux Serum studied for?

Ceralux combines arbutin, hyaluronic acid, vitamin C and ceramide for research on skin tone and pigmentation, hydration, elasticity and lipid barrier function.

How big is each serum bottle?

Every serum comes in a 30 mL bottle, ready to use with no preparation.

How should research serums be stored?

Store serums below 25 °C, away from direct light, and keep the bottle capped. Use a clean dropper for every draw.

Is GHK-Cu also available as a vial?

Yes. GHK-Cu is available as a lyophilized vial in 50 and 100 mg, and is part of the Glow and Klow peptide blends.

Are the serums for human use?

No. All serums are supplied strictly for laboratory research and are not for human or veterinary use.