(07) Refill Vitamin C Serum

Rediscover the transformative power of vitamin C with a refill designed to preserve the excellence of your ritual. The 07 Refill Vitamin C Serum by Prof. Dr. Steinkraus replenishes the freeze-dried pearls of ultra-pure L-ascorbic acid, ready to be activated just before application. By blending them with your original activator liquid, you get a freshly prepared serum that firms, reorganises the skin matrix and reveals an even, radiant tone, true to the standards of high-end cosmetics.

Why you'll love it

• Vitamin C at peak performance: protective pearls that activate instantly for optimal release without oxidation, preserving brightening and pro-collagen potency.
• Smart formula architecture: conditioning support and jojoba oil balance sensoriality and stability of the active ingredient, preserving its integrity until the moment of use.
• Visible results: firmness, refined texture and even tone with a healthy glow; ideal for reducing hyperpigmentation and post-blemish marks.
• Sustainable ritual: refill designed to make the most of your existing activator liquid, optimising the usage cycle without compromising the premium experience.

2-component technology

The TetCode4® line solves the inherent instability of L-ascorbic acid by separating the active ingredient (pearls) from the vehicle (activator liquid). By mixing them just before application, you get a fresh, powerful serum that acts as a benchmark antioxidant and essential cofactor in collagen biosynthesis, strengthening the dermal matrix and restoring elasticity.

Key benefits

• Ultimate antioxidant: advanced defence against free radicals and environmental stress.
• Collagen support: firming action and reorganisation of skin structure.
• Brightening effect: improved tone, reduced spots and clearer complexion.
• Polished texture: smoother, more even surface, with an elegant feel.

How to use (with Vitamin C serum activator liquid)

• Activation: in your palm, gently crumble a pearl and add 2–3 pumps of your activator liquid; mix until fully dissolved.
• Application: spread over face, neck and décolletage, morning and/or evening after cleansing.
• Finishing touch: complete with Hyaluron Serum and Face Care cream (Light, Medium or Rich) to boost hydration and comfort.
• Expert tip: breaking the pearl with your finger before adding the activator makes for a more even dissolution.

Suggested routine

In the morning: cleansing → activation and application of Vitamin C → Hyaluron Serum → Face Care cream → sun protection SPF50+. In the evening: alternate with Vitamin A Serum on different days to maximise tolerance and anti-ageing synergies.

Ingredients (INCI)

Vitamin C Concentrate – Pearls: Ascorbic Acid, Polyquaternium-10, Simmondsia Chinensis (Jojoba) Seed Oil.

Science and technical notes

The pearls may show slight variations in shape due to vibration during transport without affecting their performance; simply crumble and activate as directed. Immediate activation minimises ascorbic acid degradation and ensures effective delivery for superior firmness, evenness and radiance.

Skin types

Suitable for all skin types (normal, dry, combination, oily, sensitive and mature), including those with hyperpigmentation or post-blemish marks. Its light, refined watery texture makes it a high-performance daily booster for a healthy, sophisticated glow.