Isntree Hyper Vitamin C 23 Serum

20ml

Tk 1,899.00

Isntree Hyper Vitamin C 23 Serum

Tk 1,899.00

23% vitamin C. No compromises. No apologies.

For skin that has outgrown gentle introductions and is ready for serious results. Isntree concentrated 23% pure ascorbic acid into a formula that hits hard against hyperpigmentation, dullness, and early signs of aging — while a cushion of green tea and centella keeps the experience surprisingly bearable.

This is not a beginner serum. It's the one you graduate to when you've built tolerance and want visible, accelerated change. Dark spots fade faster. Texture refines sooner. The glow that follows isn't subtle — it's the kind people notice.

Skin feels: potently brightened, firm, and deeply renewed.

- Pure Vitamin C (Ascorbic Acid 23%) — high-potency brightening, collagen synthesis, and aggressive dark spot correction
- Green Tea Extract — antioxidant-rich, calms potential irritation from high-concentration vitamin C
- Centella Asiatica — soothes, repairs, and supports the skin barrier during intensive treatment

After cleansing and toning, dispense three to four drops and press gently into skin, avoiding the eye area. Follow with moisturiser. Best used in your evening routine when starting out. If well-tolerated, can be used in the morning — always follow with SPF. Start with every other day for the first two weeks and build to daily use as your skin adjusts.

- Those with a known allergy to ascorbic acid or any listed ingredient
- Sensitive skin types or first-time vitamin C users — start with a lower concentration serum first
- Skin that is broken, sunburned, or actively irritated — wait until fully healed
- Do not layer with retinoids, AHA/BHA, or benzoyl peroxide in the same routine — risk of severe irritation
- Pregnant or breastfeeding individuals should consult their doctor before using high-concentration actives
- Store in a cool, dark place — 23% ascorbic acid oxidises rapidly with light and heat
- Patch test on the inner forearm for 24 hours before first use

- 23% pure ascorbic acid — one of the highest concentrations available in K-beauty
- Buffered with green tea and centella for tolerability
- Not recommended for vitamin C beginners — build tolerance with lower concentrations first
- Lightweight serum texture
- Targets stubborn dark spots, photodamage, fine lines, and severe dullness
- 20ml
- Made in Korea