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Medik8

Crystal Retinal 10

Retinal serum · 30 ml

$111

on Amazon · $109.42 / fl oz

Amazon price as of Sep 25, 2026, 8:40 PM ET, subject to change: the price on Amazon at checkout is the one that applies.

The Ordinary Retinal 0.2% Emulsion
1 dupe from $13.41.Compare them →−76%

Available on Amazon. We may earn a commission; the price you pay is the same.

Description

Night serum with encapsulated retinaldehyde at 0.1%, the tenth step of Medik8's Crystal Retinal range, with hyaluronic acid and vitamin E. For skin already used to retinoids.

Key ingredients
  • Retinal
  • Sodium hyaluronate
  • Vitamin E

Crystal Retinal 10 dupes

Cost per fl oz

Medik8$109.42 / fl oz
The Ordinary$26.44 / fl oz

$97.59 less at checkout than the original.

Size
Original · Medik830 ml
Dupe · The Ordinary15 ml
Key ingredients
Original · Medik8Retinal, Sodium hyaluronate, Vitamin E
Dupe · The OrdinaryRetinal, Bisabolol

What matches

Same retinoid: retinaldehyde, one step closer to retinoic acid than retinol, in a light emulsion for night use.

What the dupe does worse

Medik8 encapsulates it in cyclodextrin at 0.1% with hyaluronic acid and vitamin E, while The Ordinary uses 0.2%, twice the strength, with bisabolol and ginger to calm it, so start it every third night.

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$111

$109.42 / fl oz