20% VITAMIN C + EXTREMOZYMES

The 20% Vitamin C Serum Sourced From Land and Sea

iS Clinical GeneXC Serum combines 20% of the brand’s exclusive L-Ascorbic Acid with clinically proven Extremozymes, botanical enzymes, antioxidants and fruit acids, for long-term visible improvements and a more youthful, glowing appearance.

Hand holding blue glass bottle of iS Clinical GeneXC Serum with white dropper near face

20% Vitamin C

The brand’s exclusive L-Ascorbic Acid at a 20% concentration.

Clinically Proven Extremozymes

Proprietary enzymes proven to protect and revitalise.

Land and Sea Botanicals

Enzymes, antioxidants and fruit acids from both sources.

Long-Term Results

Formulated for lasting visible improvements, not a quick fix.

Blue glass dropper bottle of iS Clinical GeneXC Serum with silver cap on white background

THE SCIENCE

Enzymes from impossible places

Extremozymes are iS Clinical’s proprietary combination of enzymes drawn from organisms that survive extreme environments, and they are clinically proven to help protect, revitalise and enhance the foundation of healthy skin. GeneXC surrounds them with 20% exclusive L-Ascorbic Acid and botanically sourced enzymes, antioxidants and fruit acids from land and sea, working synergistically on the appearance of fine lines, wrinkles and uneven tone.

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Complete the routine

Tick to add what your skin pro pairs with GeneXC Serum, added to bag in one tap.

  • Free delivery on orders over £100
  • The same product our clinical practitioners use
FOUNDATION CREW

Vitamin C at 20%, enzymes at work

The synergistic actives behind the glow, each explained.

  • Extremozymes

    Extremozymes

    Proprietary combination of enzymes that are clinically proven to help protect skin from environmental stressors

  • Mixed Fruit Acids

    Mixed Fruit Acids

    Natural fruit and sugar acids work to enhance exfoliation, smooth skin and decrease the appearance of fine lines while enabling improved absorption of other ingredients.

  • Superoxide Dismutase

    Superoxide Dismutase

    Antioxidant-rich natural enzyme that helps protect against the visual effects of photodamage while supporting healthy skin, uniquely designed for skin absorption.

  • Vitamin C

    Vitamin C

    Scientifically advanced, stabilized form of Vitamin C, which helps to protect against the visual effects of photo-damage while providing calming properties.

HOW TO USE

Daylight duty

1. Apply a few drops to clean, dry skin each morning.

2. Allow it to absorb, then layer moisturiser and SPF over the top.

3. Stay consistent: the formula is designed for long-term visible improvements.

Blue glass bottle of iS Clinical GeneXC Serum with silver dropper cap on white block against blue background

Made for

  • Dull complexions
  • Fine lines and wrinkles
  • Uneven skin tone
  • Loss of radiance
  • Long-game routines

GeneXC Serum reviews

GeneXC questions

What are Extremozymes?

iS Clinical’s proprietary combination of enzymes, sourced from organisms that thrive in extreme environments. They are clinically proven to help protect, revitalise and enhance the foundation of healthy skin, and they are the signature of GeneXC.

Is 20% vitamin C too strong for my skin?

GeneXC uses 20% of the brand’s exclusive L-Ascorbic Acid within a formula of botanical enzymes, antioxidants and fruit acids designed to work synergistically. If your skin is new to vitamin C, patch test and build up from a few mornings a week.

How does GeneXC differ from Super Serum Advance+?

GeneXC pairs a 20% vitamin C with Extremozymes for protection and revitalisation at the foundation of the skin. Super Serum Advance+ pairs a 15% vitamin C with copper peptides, tilting towards lines and firmness. Many routines run one in the morning and rotate the other.

What visible results is it designed for?

An improvement in the appearance of fine lines and wrinkles and a more even-looking skin tone, building to a more youthful, glowing appearance. It is deliberately a long-term formula rather than an overnight one.

When in my routine should it go?

Morning suits it best: clean, dry skin, a few drops, then moisturiser and SPF. The antioxidant blend then faces the day alongside your sunscreen.

Which size should I choose?

The 15ml at £105 is the introduction; the 30ml at £169 is the better value once GeneXC has a fixed slot in your mornings.

Radiance with foundations

20% vitamin C and clinically proven Extremozymes, every morning.