99% vitamin C serum

The image shows a Vitamin C serum bottle labeled “99% Vitamin C SERUM” with orange packaging and orange slice graphics. The label claims the serum is for *brightening*, *whitening*, and *anti-wrinkle* effects, providing 24‑hour hydration and anti‑aging benefits with vitamins C & E.

*Typical description and use of Vitamin C serum:*

- *What it is:* A topical skincare product containing a high concentration of L‑ascorbic acid (Vitamin C), often combined with Vitamin E for antioxidant protection.

- *Benefits:* Helps brighten skin tone, reduce appearance of dark spots, promote collagen production for anti‑aging, and protect against oxidative stress.

- *How to use:* Apply a few drops to clean, dry skin (face or targeted areas) in the morning and/or evening before moisturizer and sunscreen. Patch‑test first, especially with high concentrations, to avoid irritation. Follow with SPF during the day because Vitamin C can increase sun sensitivity.

- *Precautions:* Check the formulation for stability (some Vitamin C serums degrade quickly). Store in a cool, dark place. If you have sensitive skin, start with a lower concentration or consult a dermatologist.

The before‑and‑after photos suggest the user applied the serum for 14 days, noting visible skin brightening and smoothing effects.

Do you want tips on choosing a stable Vitamin C serum or a skincare routine to maximize its benefits?