Compare Products: Mela B3 Serum vs Niacinamide 10% + Zinc 1% Serum

La Roche Posay

Mela B3 Serum

Premium10%
$45 / 30ml — $1.50/ml
The Ordinary

Niacinamide 10% + Zinc 1% Serum

Budget10%
$6 / 30ml — $0.20/ml

Who It's Designed For

La Roche Posay
  • Those with stubborn hyperpigmentation including sunspots, age spots, and post-acne marks
  • Users seeking dermatologist-backed, clinically tested brightening products
  • People who want an alternative mechanism to vitamin C or hydroquinone
  • All skin tones; formulated to work without affecting natural skin tone
  • Sensitive skin types who need gentle but effective brightening
The Ordinary
  • Oily and combination skin seeking oil control
  • Those who want a no-frills, high-potency niacinamide serum
  • Budget-conscious skincare users
  • People targeting enlarged pores and textural irregularities
  • Users building ingredient-focused routines

Key Ingredients

La Roche Posay

Niacinamide (10%), Melasyl (2-Mercaptonicotinoyl Glycine), Sodium Hyaluronate, LHA (Capryloyl Salicylic Acid)

The Ordinary

Niacinamide (10%), Zinc PCA (1%)

Product Composition

19% similarity (7 ingredients in common)

Shared Ingredients
aqua/water/eauniacinamideammonium polyacryloyldimethyl tauratexanthan gumpentylene glycolphenoxyethanolci 17200/red 33
Only in La Roche Posay (25)
dimethiconeglycerinpropylene glycolpolysilicone-11silicabis-peg/ppg-16/16 peg/ppg-16/16 dimethiconecystoseira tamariscifolia extract2-mercaptonicotinoyl glycinepeg-20 methyl glucose sesquistearatesodium hyaluronatesodium hydroxidesodium thiosulfatecarnosinepoloxamer 338dipotassium glycyrrhizatecaprylic/capric triglyceridecapryloyl salicylic acidcaprylyl glycolcitric acidtrisodium ethylenediamine disuccinateoctyldodecanolretinyl palmitatetocopherolpentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamateparfum/fragrance
Only in The Ordinary (5)
zinc pcatamarindus indica seed gumisoceteth-20ethoxydiglycolchlorphenesin

User Feedback Patterns

La Roche Posay
Effective for post-acne marks

Users frequently report fading of post-inflammatory hyperpigmentation from acne. Often noted as more effective than previous vitamin C serums.

Gentle on sensitive skin

Despite fragrance, many sensitive skin users report no irritation. Users with rosacea have noted tolerance.

Gradual results

Users report seeing changes over weeks to months. Not overnight results, but consistent improvement with regular use.

Texture praise

Lightweight serum absorbs quickly without greasiness. Layers well under sunscreen and makeup.

Mixed expectations

Some users with stubborn melasma or very dark spots report only modest improvement. Works better on newer or less severe pigmentation.

The Ordinary
Holy grail for oily skin

Many users with oily skin report significant oil control and fewer breakouts. High repurchase rate in this demographic.

Pilling under other products

Commonly reported issue. Users recommend applying to damp skin or mixing with a hydrating serum to improve layering.

Tacky texture

The formula can feel sticky, especially if too much is applied. Most users adapt application technique over time.

Purging or breakouts

Some users report initial breakouts. Unclear whether this is purging, sensitivity, or coincidence. Most who push through report improvement.

Value for money

Almost universally praised for price-to-performance ratio. Common comment: 'can't believe this costs $6.'

Which Should You Buy?

The Ordinary Niacinamide 10% + Zinc 1% Serum offers great value at a lower price point. La Roche Posay Mela B3 Serum may be worth the premium if you want Niacinamide (10%).

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