What Is Vitamin C Serum?

Feb 14 , 2026

What Is Vitamin C Serum?

Vitamin C has become a superstar ingredient in the world of skincare, and for good reason. From brightening dull skin to protecting against environmental damage, Vitamin C is one of the most researched and effective antioxidants available. If you’re looking for a serum that can truly transform your skin, Neostrata 15% Vitamin C + PHA is a standout option. But before diving into the specifics, let’s break down what Vitamin C serum is and why it’s so beneficial.

What Is Vitamin C Serum?
A Vitamin C serum is a concentrated skincare product that delivers a potent dose of Vitamin C (ascorbic acid) directly to the skin. Unlike creams or moisturizers, serums have a lightweight, fast-absorbing formula that allows active ingredients to penetrate deeply, where they can make the most impact.

Vitamin C serums are designed to:
Protect against free radicals caused by UV exposure and pollution.
Promote collagen production to maintain skin elasticity and reduce fine lines.
Improve uneven skin tone and diminish hyperpigmentation.

Why Vitamin C Is Essential for Your Skin
Vitamin C is not just a “beauty trend”, it’s a powerhouse antioxidant with multiple benefits:

1. Brightens Dull Skin
Vitamin C inhibits melanin production, helping to reduce dark spots and even out skin tone. Over time, consistent use can result in a brighter, more radiant complexion.
2. Fights Signs of Aging
Vitamin C stimulates collagen synthesis, which helps maintain skin firmness and elasticity. This can reduce the appearance of fine lines and wrinkles, giving skin a smoother, youthful look.
3. Protects Against Environmental Stressors
As an antioxidant, Vitamin C neutralizes free radicals generated by sun exposure, pollution, and other environmental aggressors. This helps prevent premature aging and maintains healthier skin.

Why Neostrata 15% Vitamin C + PHA Stands Out
While many Vitamin C serums exist, Neostrata 15% Vitamin C + PHA offers unique benefits thanks to its advanced formulation:
  • 15% Pure Vitamin C: Provides a potent dose for visible brightening and protection.
  • PHA (Polyhydroxy Acid): A gentle exfoliant that helps remove dead skin cells, improving texture and enhancing Vitamin C absorption.
  • Gentle on Skin: Unlike some high-concentration Vitamin C serums that can irritate sensitive skin, the addition of PHA makes this formula mild and suitable for daily use.
  • Hydration Boost: PHAs are also humectants, which help retain moisture and prevent dryness while you brighten and rejuvenate your skin.
How to Use Neostrata 15% Vitamin C + PHA
For best results:
  • Cleanse your face thoroughly.
  • Apply a few drops of the serum to your face and neck.
  • Follow with a moisturizer to lock in hydration.
  • Always apply sunscreen in the morning! Vitamin C works best alongside sun protection to prevent new pigmentation and free radical damage.

Who Can Benefit From Vitamin C Serum?
Vitamin C serum is suitable for almost everyone, especially those looking to:
  • Reduce dark spots or post-acne marks.
  • Improve overall skin radiance.
  • Protect skin from environmental damage.
  • Maintain youthful skin and reduce early signs of aging.
The Bottom Line
Vitamin C serum is more than just a brightening product, it’s a multitasking powerhouse that protects, rejuvenates, and revitalizes your skin. Neostrata 15% Vitamin C + PHA takes it a step further by combining the brightening power of Vitamin C with gentle exfoliation and hydration, making it an ideal daily serum for anyone seeking a brighter, smoother, and healthier complexion.

✅ Tip: Consistency is key. Incorporate Neostrata 15% Vitamin C + PHA into your morning routine and pair it with a good sunscreen for optimal results.