Dual Vitamin C Complex
Tetra Serum contains two lipid-soluble Vitamin C derivatives:
Tetrahexyldecyl Ascorbate
A stable oil-soluble Vitamin C derivative used to provide antioxidant and brightening support.
Its lipid solubility makes it particularly compatible with emulsion-based formulations and allows it to integrate well within the serum's lipid phase.
Ascorbyl Tetraisopalmitate
A second oil-soluble Vitamin C derivative providing complementary antioxidant and complexion-supporting benefits.
Together, the two derivatives form Tetra Serum's Dual Vitamin C Complex, helping support brighter, more even and healthier-looking skin.
Hydroxypinacolone Retinoate / HPR
The Vitamin A active within Tetra Serum.
Franck Global refers to this as Granactive Retinoid.
Hydroxypinacolone Retinoate is an advanced cosmetic retinoid used to support:
Skin renewal + smoother texture + fine-line improvement + more even-looking skin.
Unlike conventional Retinol, HPR is a different retinoid molecule and should not be marketed as simply “Retinol”.
Ubiquinone / Coenzyme Q10
A potent antioxidant naturally associated with cellular energy processes.
Within skincare, CoQ10 helps provide antioxidant support against free-radical damage and complements the serum's Vitamin C and Vitamin E system.
Sodium Hyaluronate
A form of Hyaluronic Acid that attracts and retains water within the upper layers of the skin.
It supports hydration, softness and a plumper-looking complexion.
Rosehip Seed Oil
A nutrient-rich botanical oil containing essential fatty acids and naturally occurring antioxidant compounds.
It provides nourishing lipid support and complements the formula's broader renewal positioning.
Sea Buckthorn Fruit Oil
A deeply coloured botanical oil naturally rich in antioxidant compounds and fatty acids.
It helps nourish the skin while providing complementary antioxidant and barrier support.
Evening Primrose Oil
Rich in essential fatty acids, particularly gamma-linolenic acid, helping support skin softness and the hydrolipid barrier.
Grape Seed Oil
A lightweight botanical oil providing antioxidant and emollient support.
It helps soften the skin without making the serum unnecessarily heavy.
Vitamin E / Tocopherol
Provides lipid-soluble antioxidant protection and complements both Vitamin C and the botanical oil system.
Lecithin
A phospholipid ingredient that supports the serum's lipid-delivery system while also providing skin-conditioning benefits.

Apply 2–3 drops to clean, slightly damp skin over the:
Face + Neck
Massage gently and allow the serum to absorb.
Follow with your prescribed moisturiser.
Franck Global currently recommends use:
Morning and/or evening.
Morning
Always follow with a broad-spectrum SPF 50+.
If New to Retinoids
Because Tetra Serum contains Hydroxypinacolone Retinoate, it is sensible to introduce the serum gradually if your skin is not accustomed to Vitamin A products.
Begin with:
2–3 applications per week
and increase frequency according to skin tolerance.
If irritation develops, reduce frequency or discontinue use.
For external use only.
Store in a cool, dry place.

Dull or tired-looking skin
Loss of radiance
Uneven-looking skin tone
Uneven skin texture
Fine lines
Early visible signs of ageing
Mature skin
Dehydrated skin
Skin exposed to environmental stress
Skin requiring antioxidant support
Clients wanting Vitamin C and retinoid benefits in one serum
Clients already comfortable incorporating active skincare
Skin requiring both renewal and lipid support