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Comparison · 4 products tested against published criteria

Best retinol serums compared

Concentration is only half the story — formulation, packaging and irritation profile decide whether you keep using it.

By THRYV News Desk · Updated August 9, 2026 · 8 min read

Illustrative photograph for Best retinol serums compared
Illustrative studio photograph of this product class — not a picture of a specific model.

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At a glance

  • Best overall:La Roche-Posay Retinol B3 Serum≈ $45
  • Also considered:Avène A-Oxitive night peel≈ $42
  • Best for experienced users:Medik8 Crystal Retinal≈ $65
  • Best value:The Ordinary Retinal 0.2% Emulsion≈ $12

Prices shown without a retailer are manufacturer list prices. Checked offers show the retailer and the time we last verified the price.

Retinoids are among the best-evidenced skincare ingredients, and also the easiest to buy badly. Concentration means little without a stable formulation, opaque air-tight packaging and a delivery system that keeps irritation low enough to use consistently. We compared published formulations and irritation profiles rather than marketing claims.

Best retinol serums compared — side-by-side comparison
ProductScorePriceRetinoidStrengthPackagingFragranceCost/monthBuy
La Roche-PosayRetinol B3 SerumBest overall9.0

≈ $45

Retinol + gradual release0.3%Opaque airless pumpNone≈ $15Amazon
AvèneA-Oxitive night peel8.4

≈ $42

Retinaldehyde blendlowOpaque tubeNone≈ $21Amazon
Medik8Crystal RetinalBest for experienced users8.9

≈ $65

Retinaldehyde0.01–0.1%Opaque airless pumpNone≈ $22Amazon
The OrdinaryRetinal 0.2% EmulsionBest value8.0

≈ $12

Retinaldehyde0.2%Opaque pumpNone≈ $6Amazon
Best price today

Prices shown without a retailer are manufacturer list prices. Checked offers show the retailer and the time we last verified the price.

The shortlist in detail

#1Best overall

La Roche-Posay Retinol B3 Serum

The best-tolerated route into retinol.

9.0
Price

≈ $45

Best for
First-time retinol users and sensitive skin.

What we liked

  • Gentle gradual-release formulation
  • Opaque air-tight pump
  • Widely available and often discounted

What we didn't

  • Lower strength than treatment-grade options
  • Silicone finish is not for everyone
Check priceAmazon
#2

Avène A-Oxitive night peel

Gentlest option for reactive skin.

8.4
Price

≈ $42

Best for
Rosacea-prone or highly reactive skin.

What we liked

  • Very low irritation
  • Fragrance-free and minimal ingredient list
  • Good barrier support

What we didn't

  • Slowest visible change
  • Small tube for the price
Check priceAmazon
#3Best for experienced users

Medik8 Crystal Retinal

The strength ladder done properly.

8.9
Price

≈ $65

Best for
Users already tolerating retinol who want faster results.

What we liked

  • Retinaldehyde works faster than retinol
  • Clear ladder from 1 to 24 strength
  • Airless packaging

What we didn't

  • Most expensive per month
  • Ladder encourages repeat buying
Check priceAmazonMedik8
#4Best value

The Ordinary Retinal 0.2% Emulsion

Cheapest credible retinaldehyde.

8.0
Price

≈ $12

Best for
Budget-conscious users who already have a barrier routine.

What we liked

  • A fraction of the price per month
  • Genuine retinaldehyde
  • Simple formulation

What we didn't

  • Thin emulsion needs a moisturiser on top
  • Pump can be inconsistent
Check priceAmazon

The verdict

Start on the La Roche-Posay B3 serum: it is the one most people keep using, and consistency is what produces results with retinoids. Medik8's Crystal Retinal is the step up once your skin tolerates it, while The Ordinary's retinal gives you most of the active for a quarter of the money.

9.0

Our pick

La Roche-Posay Retinol B3 Serum

Amazon

Common questions

How long before retinol shows results?
Texture changes appear around eight to twelve weeks of consistent nightly-to-alternate-night use. Anything faster is usually hydration, not remodelling.
Do I need sunscreen with retinol?
Yes. Retinoids increase photosensitivity, and unprotected sun exposure undoes the benefit you are paying for.

Sources

Specifications and list prices come from each manufacturer's own product page. Offer prices are read from the retailer at the time shown next to the price and are not supplied by the brands.

Why you can trust this comparison

THRYV publishes the criteria before the shortlist, scores each product against them, and states plainly where a figure comes from the manufacturer rather than our own testing. Prices change constantly — we publish only offers we checked ourselves, with the time we checked. We may earn a commission from the links on this page; it never changes a ranking or a score.

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