Liquid Peptides Advanced MP + C-Tetra Advanced Duo

Sale price$236.34 Regular price$303.00
Save $66.66

Valued at $303

Authorised Australian Stockist


Medik8's two hero serums, both full size. C-Tetra Advanced, a 20% stabilised vitamin C gel-serum with phyto exosomes, brightens and defends against daily environmental damage in the morning. Liquid Peptides Advanced MP, a 30% multi-peptide complex with growth factors and dual mini-proteins, works morning and night to soften lines and support firmer, more hydrated skin. The pair most of our Medik8 customers buy together.

Valued at $303, the duo includes:

  • Liquid Peptides Advanced MP 30ml, valued at $160
  • C-Tetra Advanced 30ml, valued at $143
When to use Morning: C-Tetra Advanced then Liquid Peptides Advanced MP; evening: Liquid Peptides Advanced MP
How it works

Defend by day, rebuild around the clock

C-Tetra Advanced is Medik8's 20% vitamin C gel-serum: stabilised tetrahexyldecyl ascorbate with vitamin E, acetyl zingerone and phyto exosomes, brightening tone and neutralising the daily oxidative load that drives collagen loss. It is the morning antioxidant step.

The peptide step

Liquid Peptides Advanced MP carries a 30% multi-peptide complex with growth factors and Medik8's dual mini-proteins: signal peptides that encourage collagen and elastin production, neurotransmitter-type peptides that soften expression lines, and panthenol and hyaluronic acid for hydration. Fragrance-free and gentle enough for morning and evening.

The fit

Medik8's two best-selling serums as a pair: the protective vitamin C in the morning, the rebuilding peptides over it and again at night. The daytime half of the CSA routine, with the night retinoid left to your own choice.

Who it suits

Skin showing fine lines, dullness and early loss of firmness; anyone building a Medik8 routine who wants the two serums most of our customers buy together; and Liquid Peptides users who have not yet added the vitamin C step.

Worth knowing

Liquid Peptides Advanced MP is fragrance-free; C-Tetra Advanced is scented with grapefruit peel oil, so check it with a citrus or fragrance sensitivity. Both suitable in pregnancy. Neither replaces a night retinoid.

How to use

Mornings on cleansed skin: four to five drops of C-Tetra Advanced over face and neck, then one to two pumps of Liquid Peptides Advanced MP pressed over the top. Follow with moisturiser and SPF.

Evenings: Liquid Peptides Advanced MP after cleansing, before or after your retinoid, then moisturiser.

Layering

Use alongside

Crystal Retinal at night to complete the CSA routine, Advanced Day Total Protect or your usual SPF in the morning, and Total Moisture or Advanced Night Restore as the moisturiser. Both serums sit under everything else.

Before you start

Not suitable if

  • Sulfite sensitivity — contains sodium metabisulfite
  • Known citrus or fragrance allergy — contains grapefruit peel oil (declared citral, linalool, limonene)
  • Severe shellfish allergy — acetyl glucosamine may be shellfish-derived; patch test

Good to know

  • Patch test on a small area of skin before first full use
Full ingredients

Liquid Peptides Advanced MP 30ml:
Aqua (Water), Glycerin, Dimethicone, Dimethyl Isosorbide, Butylene Glycol, Undecane, Arginine, Inulin, Microcrystalline Cellulose, Ceteareth-20, Tridecane, Tocopherol, Hydroxyacetophenone, Sodium Hyaluronate, Palmitoyl Tripeptide-38, Panthenol, Caprylic/Capric Triglyceride, Palmitoyl Tripeptide-5, Polyacrylate Crosspolymer-6, Palmitoyl Tripeptide-1, Pullulan, Tetrapeptide-21, Palmitoyl Tetrapeptide-10, Palmitoyl Tetrapeptide-7, Ammonium Polyacryloyldimethyl Taurate, Glyceryl Linoleate, Acetyl Hexapeptide-8, Pentapeptide-18, Oligopeptide-1, Arginine/Lysine Polypeptide, Sucrose Palmitate, Cetyl Palmitate, Phenoxyethanol, Ethylhexylglycerin, Carbomer, Copper Palmitoyl Heptapeptide-14, Heptapeptide-15 Palmitate, Benzotriazolyl Dodecyl P-Cresol, Polysorbate 80, Sorbitan Stearate, Polysorbate 20, Carnosine, Sodium Metabisulfite, Dunaliella Salina Extract, Helianthus Annuus (Sunflower) Seed Oil, Hydroxypropyl Cyclodextrin, Dimethicone/Vinyl Dimethicone Crosspolymer, Sodium Benzoate, Hydrogenated Lecithin, Caprylyl Glycol, Pantolactone, Xanthan Gum, Disodium EDTA, T-Butyl Alcohol, Potassium Sorbate, Citric Acid, Glyceryl Caprylate, Lactic Acid/Glycolic Acid Copolymer, Polyvinyl Alcohol, Phenylpropanol

C-Tetra Advanced 30ml:
Aqua (Water), Tetrahexyldecyl Ascorbate, Isododecane, Propanediol, Acetyl Glucosamine, Squalane, Tocopherol, Acetyl Zingerone, Camellia Sinensis (Green Tea) Leaf Vesicles, Hydroxyacetophenone, Sodium Hyaluronate, Cellulose, Avena Sativa (Oat) Kernel Extract, Glycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Citrus Grandis (Grapefruit) Peel Oil, Sucrose Stearate, Tetrasodium Glutamate Diacetate, Ethylhexylglycerin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xanthan Gum, Sodium Benzoate, Cellulose Gum, 1,2-Hexanediol, Polysorbate 60, Sorbitan Isostearate, Citric Acid, Phenoxyethanol, Citral, Linalool, Limonene

Verified against Australian stock on 27 October 2026.