Ultimate Strength Vitamin C Serum

Ultimate Strength is a 20% vitamin C face serum for dullness, uneven tone and dark spots, suitable for all skin types at any age. It combines 20% L-ascorbic acid with sodium ascorbyl phosphate, vitamin E (1%) and ferulic acid (0.5%) to brighten skin and strengthen its defence against UV and pollution damage. Use 2 to 3 drops every morning after cleansing, before moisturiser and SPF. 30ml. Made in the UK.

Meet the high-performance morning essential your skin has been waiting for.

Ultimate Strength is built around the "Holy Trinity" of antioxidants: Vitamin C, Vitamin E, and Ferulic Acid. This specific trio is the industry benchmark for brightening skin and neutralising environmental damage, but while some brands charge a small fortune for this exact combo, we believe professional-grade science should be accessible.

What sets us apart?

We don’t just stop at a massive 20% L-Ascorbic Acid. To make this formula even more effective and resilient, we’ve infused it with a high-stability Vitamin C derivative. This dual-action approach means you get the immediate brightening power of pure Vitamin C, plus the sustained, deep-reaching benefits of a stabilised form. It’s a secondary shield under your SPF that mops up damage while visibly firming your skin.

The Routine: Apply in the morning after cleansing, but before your moisturiser and SPF.

The Technique: Use 2 to 3 drops. Press it into your skin, don't rub it in. Give it about 60 seconds to fully absorb.

The Golden Rule: Always follow with SPF. Vitamin C and Sunscreen are like a power couple; they actually make each other more effective at fighting UV damage.

Pro Storage Tip: To keep those actives at peak potency for even longer, store this bottle in the fridge. Vitamin C loves the cold, and keeping it chilled ensures the 20% concentration stays "fresh-press" powerful until the very last drop.

Sensitivity: If you're new to high-strength C, start every other morning. Skip the heavy AHA/BHA exfoliants on the mornings you use this.

The Gold Standard Trio + Derivative:

L-Ascorbic Acid (20%): The most researched form of Vitamin C. It inhibits the enzymes that cause dark spots and signals your skin to produce more collagen.

Sodium Ascorbyl Phosphate (Stabilised Derivative): Our secret weapon. This stable form of Vit C works alongside the pure acid to ensure the formula stays potent and effective.

Vitamin E (Tocopherol 1%): A powerhouse antioxidant that Vitamin C actually "recharges," extending its protective effects.

Ferulic Acid (0.5%): A plant-based antioxidant that stabilises the formula and doubles the photoprotective effect of Vitamins C and E.


Full Ingredient List:

Aqua, Ethoxydiglycol, L-Ascorbic Acid, Sodium Ascorbyl Phosphate, Propylene Glycol, Glycerin, Laureth-23, Tocopherol, Ferulic Acid, Panthenol, Triethanolamine, Sodium Hyaluronate, Phenoxyethanol.

This specific "C+E+Ferulic" combination is one of the most rigorously studied formulas in modern dermatology:

The 4x Photoprotective Effect: Clinical studies show that the combination of Vitamin C, Vitamin E, and Ferulic Acid provides four times the environmental protection of Vitamin C alone.

Dual-Form Efficacy: By combining L-Ascorbic Acid with a stabilized derivative, the formula provides both an immediate antioxidant hit and sustained-release benefits for deeper skin layers.

Collagen Synthesis: Topical Vitamin C is clinically documented to stimulate the production of Type I and Type III collagen, leading to measurably firmer, more resilient skin.

Tyrosinase Inhibition: 20% Vitamin C is proven to inhibit the enzyme responsible for melanin production, measurably reducing hyperpigmentation and evening skin tone over 8 to 12 weeks.

Temperature Stability: Research confirms that maintaining L-Ascorbic Acid in a cool, dark environment (like a refrigerator) significantly slows down the natural degradation process.