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Pep-Stem Peptide Serum with Argireline® & Collagen Peptides

£26.40

A concentrated peptide serum combining Argireline®, collagen peptides, and plant stem cell extract within a biomimetic formulation framework developed by Dr Klara Valko, pharmaceutical scientist and Honorary Professor at UCL School of Pharmacy. Designed for skin showing visible expression lines, loss of firmness, and reduced radiance, this lightweight serum complements...

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Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

    All orders shipped with UPS Express.

    Always free shipping for orders over US $250.

    All orders are shipped with a UPS tracking number.

Returns

    Items returned within 14 days of their original shipment date in same as new condition will be eligible for a full refund or store credit.

    Refunds will be charged back to the original form of payment used for purchase.

    Customer is responsible for shipping charges when making returns and shipping/handling fees of original purchase is non-refundable.

    All sale items are final purchases.

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A concentrated peptide serum combining Argireline®, collagen peptides, and plant stem cell extract within a biomimetic formulation framework developed by Dr Klara Valko, pharmaceutical scientist and Honorary Professor at UCL School of Pharmacy.

Designed for skin showing visible expression lines, loss of firmness, and reduced radiance, this lightweight serum complements Klara’s Day and Night Creams by delivering focused peptide support and hydration.

Supporting Actives

Phytocelltec™ Malus Domestica (Apple Stem Cell Extract)
Supports skin vitality.

Niacinamide & Panthenol
Help maintain even tone and support the skin barrier.

Hyaluronic Acid
Enhances surface hydration and visible plumpness.

Botanical Antioxidants (Sea Buckthorn, Rosemary, Lotus)
Provide environmental support.

Hyaluronic Acid & Hydrolysed Collagen
Provide surface hydration and visible plumpness.

Sea Buckthorn & Botanical Antioxidants
Support protection against environmental stress.

Key Benefits

• Helps improve the appearance of fine lines
• Supports smoother, firmer-looking skin
• Enhances hydration and radiance
• Lightweight, fast-absorbing texture
• Suitable for mature or dehydrated skin

Molecular Evaluation

The formulation was evaluated in vitro by Makrolife GmbH using human macrophage gene expression analysis. Results indicated modulation of pathways associated with inflammatory balance and angiogenesis-related signalling, supporting the biological activity profile of the peptide complex.

These findings are consistent with the formulation’s intended role in supporting skin vitality and visible resilience.

How to Use

Apply 1–2 pumps to cleansed skin morning and evening.
Gently pat into face and neck.
Follow with Klara’s Day or Night Cream.

Designed for Intelligent Ageing

A peptide-focused serum developed with scientific precision — not exaggerated claims.

Full ingredient listAqua, Rosa Damascena Flower Water, Cucumis Sativus Juice, Acetyl Hexapeptide-3, Aloe Barbadensis Leaf Juice Powder, Malus Domestica Fruit Cell Culture Extract, Xanthan Gum, Glycerin, Phenoxyethanol, Lecithin, Sodium Levulinate, Sodium Anisate, Steareth-20, N-Hydroxysuccinimide, Chrysin, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide-7, Propylene Glycol, Benzyl Alcohol, Salicylic Acid, Sorbic Acid, Hydrolysed Collagen, Niacinamide, Chondrus Crispus Powder, Algin, Panthenol, Sodium Ascorbyl Phosphate, Hyaluronic Acid, Lotus Essential Oil, Hippophae Rhamnoides Fruit Extract, Helianthus Annuus (Sunflower) Seed Oil, Rosmarinus Officinalis Leaf Extract, Sodium Phytate, Citric Acid. (Potential allergens present in essential oils: Benzyl alcohol, Linalol, Hydroxycitronellal, Benzyl salicylate, Limonene, Cinnamyl alcohol, Citral)

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