ISNTREE Hyper Vitamin C 23 Serum

Description
Isntree Hyper Vitamin C 23 Serum (20ml) is a high-strength Korean vitamin C serum made to target dark spots, post-acne marks, dullness, and uneven skin tone for a brighter, clearer glow. It uses 23% pure Vitamin C (Ascorbic Acid) to support a more even complexion and antioxidant protection, while adding skin-comfort ingredients like Panthenol and Vitamin E (Tocopherol) to help keep skin feeling hydrated and supported.

This is a “power” brightening serum, so it’s best for experienced vitamin C users or anyone serious about hyperpigmentation care. The formula is lightweight and meant to be used carefully and consistently to improve overall radiance, skin texture, and the look of discoloration over time.

How to use
Night routine (recommended for beginners)
1) After cleansing and toner, apply 2–3 drops to dry skin (avoid eye and lip area).
2) Gently pat until absorbed.
3) Finish with moisturizer.

How often
- Because it’s high concentration, start once every 3–4 days, then increase slowly if your skin is comfortable.

Important
- Use sunscreen every morning while using vitamin C.
- Avoid using the same night with strong exfoliating acids (AHA/BHA/PHA) or retinoids if your skin is sensitive.
- If stinging or redness feels strong, reduce frequency or stop.