C15+ Bioactive Concentrate
25.5% L-ascorbic acidMulti-type collagen
Stabilized and supercharged.
A high-potency pure vitamin C serum for dullness, uneven tone and daily environmental stress, built to stay gentle at professional strength.
- Role
- Brighten and protect
- Use
- PM, or AM with SPF
- Skin type
- All, incl. melanin-rich
- Base
- Anhydrous
- After opening
- Use within 3 months
- Developed in
- South Korea
Key actives L-ascorbic acid (25.5%), betaine, bisabolol, centella asiatica bioactives, multi-type collagen complex, acetyl hexapeptide-8.
Ingredient spotlight
Pure vitamin C at a strength that counts. L-ascorbic acid helps protect against daily stressors and brighten uneven tone.
How it works L-ascorbic acid is the most studied form of vitamin C. It neutralises free radicals from sun and pollution and interrupts melanin formation. Pair it with daily SPF.
Overview
25.5% stabilised L-ascorbic acid in a water-free base, built for tolerance, low oxidation and full activity at professional strength.
With consistent use, C15+ helps improve skin resilience, firmness and brightness. It is designed to meet the performance standards of in-clinic care with the ease of an everyday serum.
Key ingredients
Brighten
L-ascorbic acid (25.5%)
The most studied form of vitamin C. Helps neutralise free radicals, supports the skin’s own collagen production and brightens uneven tone.
Calm
Betaine and bisabolol
Calm and hydrate to reduce the sensitivity high-strength vitamin C can cause.
Barrier
Centella asiatica bioactives
Madecassoside, asiaticoside and asiatic acid soothe inflammation and support barrier recovery.
Hydrate
Multi-type collagen complex
Soluble collagen, hydrolysed collagen and atelocollagen condition and hydrate the skin’s surface.
Firm
Acetyl hexapeptide-8
A peptide that supports visible firmness and softens the look of early fine lines.
Defend
Berry extracts
Blueberry, raspberry, strawberry and bilberry add antioxidant support against environmental stress.
Why water-free
Vitamin C breaks down quickly in water. C15+ is stabilised in an anhydrous base, which keeps L-ascorbic acid active for longer and allows a high concentration with a gentle feel on the skin.
Made for
- Everyday use against dullness, uneven tone and early signs of ageing.
- In-clinic use alongside professional treatments, under professional supervision.
How to use
- Cleanse and tone. Leave the skin slightly damp.
- Dispense 4–5 drops onto your fingertips, enough for face and neck.
- Press or smooth onto face and neck with light upward strokes, avoiding the eyes and broken skin.
- Let it absorb for 1–2 minutes before moisturiser or other hydrating steps.
Tips
- Use once or twice daily. Night use works best, when skin does most of its repair.
- New to vitamin C or sensitive? Start once daily or on alternate nights, then build up.
- In the morning, always finish with broad-spectrum SPF 30 or higher.
- Don’t layer with exfoliating acids or retinoids in the same routine unless advised by a professional.
- After a procedure, use only under professional supervision.
- Use within 3 months of opening. Store somewhere cool, dry and dark.
Precautions
- For external use only. Keep out of reach of children.
- Avoid contact with eyes. If it gets into the eyes, rinse thoroughly with water.
- Stop using if irritation or redness occurs, and see a dermatologist if it persists.
- Do not use if the safety seal is broken or tampered with.
Full ingredient list
Propanediol, L-Ascorbic Acid (25.5%), Betaine, (-)-alpha-Bisabolol, Butylene Glycol, 1,2-Hexanediol, Hydrolyzed Collagen, Vaccinium Angustifolium (Blueberry) Fruit Extract, Rubus Idaeus (Raspberry) Fruit Extract, Vaccinium Myrtillus Fruit Extract, Fragaria Ananassa (Strawberry) Fruit Extract, Asiatic Acid, Asiaticoside, Centella Asiatica Extract, Centella Asiatica Leaf Extract, Centella Asiatica Root Extract, Acetyl Hexapeptide-8, Caprylic/Capric Triglyceride, Centella Asiatica Oil, Soluble Collagen, Atelocollagen, Madecassic Acid, Madecassoside.
Where to buy
Buy minimalRX only through Skn Studio™ and certified Skn Studio™ Satellite Partners. Products from other sellers may be counterfeit or out of date.
