Un frasco cuentagotas de vidrio transparente del sérum Liquid Peptides se presenta con el cuentagotas retirado y colocado al lado, junto a gotas de sérum que muestran la textura del producto.
Una mujer sostiene una botella del sérum Liquid Peptides. El texto a la derecha indica: “Comprobado para suavizar la apariencia de líneas finas y arrugas en solo 7 días*”. Una nota al pie señala que esto proviene de un estudio independiente de consumidores.
Una mujer está aplicando el sérum Liquid Peptides en el rostro con un cuentagotas. A la izquierda, el texto indica “RESULTADOS VISIBLES EN SOLO 7 DÍAS*” y enumera los beneficios: Arrugas suavizadas Piel con aspecto juvenil Mejora de la firmeza de la piel Mayor volumen y densidad en la piel Hidratación restaurada Una nota al pie indica que las afirmaciones han sido comprobadas mediante un estudio independiente de consumidores.
Primer plano del sérum Liquid Peptides dentro de un cuentagotas. Los textos destacados resaltan los ingredientes clave: MATRIXYL® 3000, PÉPTIDO DE COBRE DIRIGIDO POR DRONES, CARNOSINA y PÉPTIDO PARA LÍNEAS DE EXPRESIÓN.
Se muestran un frasco cuentagotas de vidrio transparente del sérum Liquid Peptides y un tubo de Eyelift Peptides. El texto indica: “DESCUBRE POTENTES RESULTADOS REDUCTORES DE ARRUGAS” para el rostro y la delicada zona del contorno de ojos al combinar Liquid Peptides con Eyelift Peptides.
Un diagrama “CÓMO APLICAR LAS CAPAS”. La rutina de la mañana incluye Limpiar (Surface Radiance Cleanse), Tratar (Liquid Peptides), Vitamina C (C-Tetra) y Protector solar (Advanced Day Total Protect). La rutina de noche incluye Limpiar (Lipid-Balance Cleansing Oil), Tratar (Liquid Peptides), Vitamina A (Crystal Retinal) e Hidratar (Advanced Night Restore).
Un frasco cuentagotas de vidrio transparente del sérum Liquid Peptides se encuentra frente a su caja blanca del producto.
Un frasco cuentagotas de vidrio transparente del sérum Liquid Peptides se presenta con el cuentagotas retirado y colocado al lado, junto a gotas de sérum que muestran la textura del producto.
Una mujer sostiene una botella del sérum Liquid Peptides. El texto a la derecha indica: “Comprobado para suavizar la apariencia de líneas finas y arrugas en solo 7 días*”. Una nota al pie señala que esto proviene de un estudio independiente de consumidores.
Una mujer está aplicando el sérum Liquid Peptides en el rostro con un cuentagotas. A la izquierda, el texto indica “RESULTADOS VISIBLES EN SOLO 7 DÍAS*” y enumera los beneficios: Arrugas suavizadas Piel con aspecto juvenil Mejora de la firmeza de la piel Mayor volumen y densidad en la piel Hidratación restaurada Una nota al pie indica que las afirmaciones han sido comprobadas mediante un estudio independiente de consumidores.
Primer plano del sérum Liquid Peptides dentro de un cuentagotas. Los textos destacados resaltan los ingredientes clave: MATRIXYL® 3000, PÉPTIDO DE COBRE DIRIGIDO POR DRONES, CARNOSINA y PÉPTIDO PARA LÍNEAS DE EXPRESIÓN.
Se muestran un frasco cuentagotas de vidrio transparente del sérum Liquid Peptides y un tubo de Eyelift Peptides. El texto indica: “DESCUBRE POTENTES RESULTADOS REDUCTORES DE ARRUGAS” para el rostro y la delicada zona del contorno de ojos al combinar Liquid Peptides con Eyelift Peptides.
Un diagrama “CÓMO APLICAR LAS CAPAS”. La rutina de la mañana incluye Limpiar (Surface Radiance Cleanse), Tratar (Liquid Peptides), Vitamina C (C-Tetra) y Protector solar (Advanced Day Total Protect). La rutina de noche incluye Limpiar (Lipid-Balance Cleansing Oil), Tratar (Liquid Peptides), Vitamina A (Crystal Retinal) e Hidratar (Advanced Night Restore).
Un frasco cuentagotas de vidrio transparente del sérum Liquid Peptides se encuentra frente a su caja blanca del producto.
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Fine Lines & Wrinkles

Liquid Peptides™

  • Smooth
  • |
  • Firm
  • |
  • Plump
30% Complex Multi-Peptide Age-Defying Serum

Clinically proven to visibly smooth fine lines in just 7 days.*

Liquid Peptides is a targeted daily peptide serum for the first signs of ageing. Expertly formulated with 10 powerful peptides in a 30% blend, to help slow & prevent fine line formation.

This supercharged serum supports the skin's natural age-defying functions and features drone-targeted technology to deliver our unique blend of potent peptides where they’re needed most in the skin - for maximum visible benefits.

Say 'no' to fine lines and 'yes' to a visibly smooth, plump and hydrated complexion.

*Proven via independent consumer study on Liquid Peptides on 60 participants over 8 weeks
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El tubo de Medik8 Crystal Retinal 3 descansa sobre una franja de sérum rosa pálido sobre un fondo blanco. Distintivos destacan «Ganador de los Get The Gloss Beauty Awards 2025» y «Primera tecnología patentada del mundo», junto con el texto: «El sérum facial dermatológico n.º 1 del Reino Unido*».
Crystal Retinal®
  • Renew
  • |
  • Firm
  • |
  • Smooth
 Award-winning Age-Defying Vitamin A Night Serum
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Key Benefits
All-in-One Youth-Boosting Effect

Fine lines are visibly reduced as the lightweight serum plumps, firms and refines the look of uneven skin texture.

Peptide Power Where Your Skin Needs It Most

Innovative, drone-targeted technology ensures each powerful peptide is delivered where it’s needed most - for maximum visible results.

Effective Hydration

Proven to leave the skin feeling deeply hydrated by helping to boost hyaluronic acid levels within the skin.

Age-Defying Results Booster

Perfectly complements the visible age-defying results of Medik8’s proven CSA Philosophy; vitamin C plus sunscreen by day, vitamin A by night.

Proven Results
7 days to improved skin firmness & plumpness*
7 days to visible fine line & wrinkle reduction*
7 days to younger-looking skin*
98% agree Liquid Peptides is gentle on the skin*
97% experienced long-lasting hydration*
*Proven via independent consumer study on Liquid Peptides on 60 participants over 8 weeks
How to Use

First-time use

If you’re new to Liquid Peptides, we advise performing a patch test at least 24 hours before first use. Learn how to patch test here.

Step 1

After cleansing in the morning and evening, massage 6 drops of Liquid Peptides across the face, neck and décolletage.

Step 2

Leave to absorb before applying moisturiser. We recommend Total Moisture Daily Facial Cream.

Key Ingredients
Matrixyl® 3000 (pronounced 'ma-TRIX-ul 3 thousand')

A combination of peptides which 'trick' the skin into producing more collagen for visible firming, plumping and wrinkle-smoothing results.

Drone-Targeted Copper Peptide

Encapsulated in a polymer system, it dives through the layers of the skin to specifically support collagen-producing cells.

Expression Line Peptide

An innovative peptide which works to tackle the appearance and formation of fine lines by helping to block the pathway that leads to facial muscle contraction. This leaves the skin visibly smoother and more youthful-looking.

Carnosine (pronounced 'CAR-no-seen')

A protective peptide that is naturally produced in the body, carnosine helps to block skin-damaging sugars from binding to collagen in the skin, therefore minimising the visible formation of the first signs of ageing.

Expression Line Peptide

An innovative peptide which works to tackle the appearance and formation of fine lines by helping to block the pathway that leads to facial muscle contraction. This leaves the skin visibly smoother and more youthful-looking.

Carnosine (pronounced 'CAR-no-seen')

A protective peptide that is naturally produced in the body, carnosine helps to block skin-damaging sugars from binding to collagen in the skin, therefore minimising the visible formation of the first signs of ageing.

Multi-Weight Hyaluronic Acid (prounounced 'Hiya-le-ronick')

With the ability to attract and retain more than 1,000 times its own weight in water, multi-weight hyaluronic acid draws moisture into multiple layers of the skin; leaving the complexion deeply hydrated and visibly supple.

Full List of Ingredients
Liquid Peptides™
30% Complex Multi-Peptide Age-Defying Serum

Aqua (Water), Glycerin, Butylene Glycol, Inulin, Sodium Hyaluronate, Panthenol, Alpha-Glucan Oligosaccharide, Carnosine, Carbomer, Polysorbate 20, Caprylyl Glycol, Phenoxyethanol, Hydroxypropyl Cyclodextrin, Dunaliella Salina (Green Algae) Extract, Ethylhexylglycerin, Citric Acid, Palmitoyl Tripeptide-5, Sodium Benzoate, Acetyl Hexapeptide-8, Tetrapeptide-21, Pentapeptide-18, Palmitoyl Tripeptide-1, Pantolactone, Palmitoyl Tripeptide-38, Palmitoyl Tetrapeptide-7, Glyceryl Caprylate, Lactic Acid/Glycolic Acid Copolymer, Polyvinyl Alcohol, Phenylpropanol, Copper Palmitoyl Heptapeptide-14, Heptapeptide-15 Palmitate, Potassium Sorbate, Xanthan Gum.

*Although we try our best to ensure this list of ingredients is accurate there may be product upgrades from time to time, or slight variants between different regions based on local laws, meaning the only definitive ingredient list is that which is printed on the product packaging.
  • Fragrance free
  • No synthetic colours
  • Paraben free
  • Alcohol free
  • Certified by the vegan society
  • Used in professional treatments
Experts Recommended

Liquid Peptides takes the renowned benefits of peptides to the next level.

DANIEL ISAACS
Chief Product Officer

One of the finest formulations you’ll find!

HANNAH COATES
Beauty & Wellness Editor - British Vogue

Complete Your Regime

Reviews

Frequently Asked Questions

Can I use Liquid Peptides alongside Crystal Retinal?
Absolutely. Liquid Peptides and Crystal Retinal are the perfect nighttime pairing to take your visible wrinkle-reducing results to the next level.
Can I use Liquid Peptides directly after an exfoliating acid like Press & Glow or Press & Clear?
Yes. Liquid Peptides can be applied straight after an exfoliating acid, in both your AM and PM routines.
What's the difference between Liquid Peptides and Copper PCA Peptides?
We recommend Copper PCA Peptides as a great alternative for those who are sensitive to vitamin C, while Liquid Peptides is our all-round age-defying peptide formula.
Can I use Liquid Peptides during pregnancy?
As general guidance, this product does not contain any ingredients which we would recommend to avoid during pregnancy, unless advised by your doctor.
Should I apply Liquid Peptides in the morning or evening?
Both. Liquid Peptides can be applied both morning and night for optimal visible results. Apply after cleansing and toning but before oil-based serums and moisturisers.
Liquid Peptides™