The Best Brightening and Vitamin C Endorsed by New York’s Top Dermatologist

Meet Dr David Kim, M.D., M.S., a Stanford-trained, board-certified dermatologist based in New York City. With the flawless skin of a baby and nearly 165K followers on TikTok, Dr Kim has become one of the leading voices on #BeautyTok, translating dermatology into everyday language. He’s now sharing his curated list of the best brightening serums and Vitamin C products — the ones dermatologists actually use and trust.

The Best Ingredients for Skin Brightening, According to Dermatologists

1. Niacinamide (Vitamin B3): This multifaceted gem is praised for its prowess in reducing redness, enhancing skin elasticity, and lightening dark spots by inhibiting melanin transfer to the skin’s surface.
2. Glycolic Acid: As a stellar alpha-hydroxy acid (AHA), glycolic acid sloughs off dead skin cells, diminishing pigmentation, refining pores, and unveiling a rejuvenated skin texture through the promotion of new cell turnover.
3. Retinoids: These vitamin A derivatives are potent exfoliants that speed up cell renewal and visibly reduce fine lines, wrinkles, and uneven skin tone, crafting a flawless canvas.
4. Lactic Acid: Known for its gentle exfoliating properties, lactic acid is another AHA hero that ensures your skin remains smooth and youthful.
5. Tranexamic Acid: Take note of this breakthrough ingredient! Tranexamic acid has emerged as a powerhouse in skin brightening, especially effective in addressing hyperpigmentation and melasma. Originally developed to curb excessive bleeding, it now stands as the skincare industry’s next big revolution. By disrupting melanin production pathways, it tackles even the most stubborn pigmentation challenges.

Why Dermatologists Recommend Vitamin C Serum

Vitamin C is a cornerstone of any brightening routine. Dermatologists love it because it’s one of the most powerful antioxidants, defending your skin against pollution and UV-induced free radicals that accelerate ageing.

It also boosts collagen, firms the skin, and visibly reduces pigmentation. Used daily, Vitamin C serum delivers that healthy “lit-from-within” glow — think of it as your morning skin supplement.

Dr David Kim’s Top Dermatologist-Approved Brightening Serums and Vitamin C

• Skinceutical Vitamin C

• Obagi Professional C Serum

• Vichy Liftactiv Vitamin C Serum

• Timeless Vitamin C Plus E 20%

• Medik8 – c-tetra lipid vitamin c antioxidant serum

• Maelove Glow Maker Vitamin Serum

• The Inkey Tranexamic Acid Serum

• Olay Vitamin C Regenerist Vitamin C + Peptide 24 Face Moisturiser

• L’Oreal Retinol Serum

• The Ordinary Lactic Acid

• Sesderma C-Vit Liposomal Serum 

Indulge in these dermatologist-approved formulas to elevate your skin to luminous perfection, and don’t skip sunscreen. Dr Kim’s own award-winning sunscreen is a fan favourite for a reason.

FAQ — Brightening Serums & Vitamin C

What’s the difference between a brightening serum and a Vitamin C serum?	A brightening serum may include several active ingredients — such as niacinamide, acids, or tranexamic acid — to target dullness and pigmentation. Vitamin C serums focus primarily on antioxidant protection and collagen stimulation but also deliver brightening effects.
Can I use Vitamin C and retinol together?	Yes, but at different times. Apply Vitamin C in the morning (to defend against oxidative stress) and retinol at night (to repair and renew). This maximises benefits and minimises irritation.
Which Vitamin C concentration is best for beginners?	Start with 10–15% L-ascorbic acid or a derivative like ascorbyl glucoside if your skin is sensitive. Once your skin adjusts, you can increase the strength gradually.
How long does it take to see results from brightening serums?	Expect visible improvements in 4–8 weeks with consistent use. Pigmentation and texture take longer — patience is key.
Can I use brightening serums if I have sensitive skin?	Yes. Choose gentle formulations with niacinamide or lactic acid, and avoid combining too many exfoliants at once. Always patch-test first.