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iS Clinical GeneXC Serum

Name: iS Clinical GeneXC Serum
Brand: iS Clinical
SKU: 2706S
Price: 105.0 GBP
Availability: InStock

£105.00

Tax included.

Size: 15ml

15ml

30ml

✓ 20% L-Ascorbic Acid Vitamin C | ✓ Extremozyme Enzyme Technology | ✓ Gentle Enough for Sensitive Skin

iS Clinical GeneXC Serum is iS Clinical's most advanced vitamin C: a revolutionary formula featuring the brand's proprietary combination of Extremozymes, clinically shown to help protect, revitalise and enhance the foundation of the skin, with 20% exclusive L-ascorbic acid. It is the vitamin C serum for antioxidant defence, glow, firmness and early ageing that is gentle enough for sensitive skin.

iS Clinical GeneXC Serum combines a scientifically advanced, stabilised form of vitamin C, which helps protect against the visual effects of photo-damage while calming, with Extremozyme technology: a proprietary blend of enzymes clinically shown to help protect skin from environmental stressors. Superoxide dismutase, an antioxidant-rich natural enzyme uniquely designed for skin absorption, defends against the visual effects of photo-damage; mixed fruit and sugar acids from sugarcane, lemon, orange and apple enhance exfoliation, smooth skin and improve the absorption of other ingredients; and Kakadu plum, green tea and plankton extracts add botanical antioxidants sourced from both land and sea.

Visible Results Users Love

Noticeably brighter, more luminous skin
Softened fine lines and wrinkles
Enhanced appearance of elasticity and firmness
A more even-looking tone
Hydrated, protected-looking skin that stays comfortable

Why This Beats a Standard 20% Vitamin C Serum

Extremozyme enzyme protection - iS Clinical GeneXC Serum adds enzymes clinically shown to defend against environmental stressors
20% L-ascorbic acid in a watery, fast-absorbing texture that suits sensitive skin
Superoxide dismutase and Kakadu plum bring antioxidants most vitamin C serums lack
Mixed fruit acids improve absorption, so the vitamin C does more
Botanically derived, paraben free and never tested on animals

Best For

Early ageing and anyone keen to stay ahead of it
Dull skin that wants glow and even tone
Thin skin with poor elasticity
Over-exfoliated or sensitive skin that needs antioxidant support
All skin types and genders looking for a flagship daily vitamin C

Choose iS Clinical GeneXC Serum if you want the strongest antioxidant defence and glow iS Clinical makes; choose Super Serum Advance+ if firming lines with a copper peptide matters more.

Becci, the registered aesthetics nurse behind Adore Your Skin, has spent over 20 years in specialist skincare and medical aesthetics, and clients trust her to say honestly whether a premium serum earns its price. iS Clinical GeneXC Serum does: it is the vitamin C she recommends to clients who want the most complete daily defence against environmental stress and the brighter, firmer-looking skin that follows, without the sting that puts people off.

Size: 15ml or 30ml

FAQS

Is iS Clinical GeneXC Serum suitable for sensitive skin despite being 20% vitamin C? +

Yes - iS Clinical lists sensitive skin types and even over-exfoliated skin among those it suits. The stabilised L-ascorbic acid is formulated with calming properties and the watery texture absorbs without residue. As with any vitamin C, patch test and build up to twice daily.

What are Extremozymes? +

Extremozymes are iS Clinical's proprietary combination of enzymes derived from organisms that survive extreme environments. The brand describes them as clinically shown to help protect skin from environmental stressors and to support multi-level protection and long-term visible improvements.

What is the difference between GeneXC Serum and Super Serum Advance+? +

GeneXC Serum is 20% vitamin C with Extremozymes, superoxide dismutase and fruit acids - the choice for antioxidant defence, glow and early ageing. Super Serum Advance+ is 15% vitamin C with copper tripeptide-1 - the choice for lines, firmness and post-blemish marks. Many customers alternate them.

Can I use iS Clinical GeneXC Serum with retinol? +

Yes. Use GeneXC Serum in the morning under sunscreen and your retinol at night. If you use GeneXC twice daily, apply it first in the evening, let it absorb, then your retinol, easing back if skin feels dry.

Should I use GeneXC Serum in the morning or evening? +

iS Clinical recommends twice daily for optimal results. If you only use it once, make it the morning so the antioxidants and Extremozymes protect under your SPF all day.

Does GeneXC Serum tingle? +

A brief tingle is possible on first use because of the 20% L-ascorbic acid and mild fruit acids, and it settles as skin adjusts. Mixing it with Hydra-Cool Serum in your palm softens the sensation.

Can I use GeneXC Serum if I have over-exfoliated my skin? +

iS Clinical lists over-exfoliated skin among the types GeneXC suits, thanks to its protective enzymes. Pause other acids and retinol, use GeneXC once daily with a good moisturiser and SPF, and reintroduce actives slowly.

Should I buy GeneXC Serum in 15ml or 30ml? +

Both sizes are the same formula. The 15ml is ideal for trying GeneXC Serum for the first time or for travel, while the 30ml is the better-value option once it has earned a permanent place in your routine. At 3-4 drops per application, a little goes a long way with either size.

Can I use iS Clinical GeneXC Serum during pregnancy or while breastfeeding? +

iS Clinical states that its formulations are non-systemic and describes them as suitable during pregnancy and breastfeeding. Like most vitamin C serums, GeneXC Serum is generally considered suitable, but check with your midwife or GP before adding any new active to your routine. It contains no vitamin A.

iS Clinical GeneXC Serum