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The Complete Guide to Vitamin C Skincare: Benefits, How to Use & What to Avoid

24 Mar 2026 · 1 min read · Aliza Beauty Team

Vitamin C is arguably the most powerful brightening ingredient in skincare. Whether you’re dealing with dullness, dark spots, or uneven skin tone, a well-formulated Vitamin C serum can be transformative.

What Does Vitamin C Do for Skin?

Vitamin C (L-ascorbic acid) is a potent antioxidant that neutralises free radicals caused by UV exposure and pollution. It also inhibits melanin production — which is why it’s so effective at fading dark spots and hyperpigmentation.

Key benefits include: brightening dull skin, evening skin tone, boosting collagen production, protecting against sun damage, and reducing the appearance of fine lines.

How to Use Vitamin C Serum

Apply 2–3 drops to clean skin every morning before your moisturiser and sunscreen. Start with every other day if you have sensitive skin and build up to daily use over 2–3 weeks.

Common Mistakes to Avoid

Don’t mix Vitamin C with niacinamide (can cause temporary flushing in some people), don’t use it alongside retinol in the same routine (use Vitamin C in the AM and retinol in the PM), and always follow with SPF — Vitamin C without sun protection is only half the formula.

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Dr. Aliza Shaista Sayyed
Founder & Chief Formulator
Dermatologist and skincare expert with over 15 years of experience in clinical skincare. Passionate about science-backed formulations that deliver real results for all skin types.