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Medik8 Crystal Retinal 6 vs The Ordinary Alpha Arbutin 2% + HA

Same comparison whichever way you searched it: The Ordinary Alpha Arbutin 2% + HA vs Medik8 Crystal Retinal 6.

The bottom line

Medik8 Crystal Retinal 6 does more across the board (it leads on hydration, barrier repair, anti-aging), while The Ordinary Alpha Arbutin 2% + HA is the simpler, more pared-back pick.

Reach for Medik8 Crystal Retinal 6 if you want the actives; The Ordinary Alpha Arbutin 2% + HA if you want fewer ingredients doing less, gently.

The Ordinary Alpha Arbutin 2% + HA keeps clear of pregnancy-flagged actives, while Medik8 Crystal Retinal 6 carries one that is best paused in pregnancy.

Reviewed by Maya FaourLast reviewed September 2026
Medik8Crystal Retinal 6Serum · ~€86See every ingredient in Crystal Retinal 6, decoded
The OrdinaryAlpha Arbutin 2% + HASerum · ~€9See every ingredient in Alpha Arbutin 2% + HA, decoded

Which should you pick?

Pick Crystal Retinal 6 if

  • your barrier feels stressed and needs the support
  • fine lines and firmness are the goal
  • you want more actives working at once

Pick Alpha Arbutin 2% + HA if

  • your skin is sensitive or reacts to fragrance
  • you want the more affordable option
  • you are prone to fungal acne (malassezia)

What each delivers

HydrationBarrierBrighteningOil-controlAnti-aging
Crystal Retinal 6Alpha Arbutin 2% + HA
  • Hydration
    107
  • Barrier repair
    73
  • Brightening / tone
    89
  • Oil-control & blemishes
    43
  • Anti-aging
    95

Side by side

Crystal Retinal 6Alpha Arbutin 2% + HA
TypeSerumSerum
Key activesGlycerin, Retinal, SqualaneAlpha Arbutin 2%, Lactic acid
TextureA rich, cushiony cream that sinks in slowly.A light, fast-absorbing texture that layers cleanly under the rest of your routine, with no greasy film.
FragranceContains fragranceNone detected
Fungal-acne safeNot likelyLikely
PregnancyOne cautionNo flagged actives
Ingredients47 listed12 listed
Price~€86~€9

What's in one but not the other

The two labels share 2 of the 57 ingredients between them. The actives are where they part company.

What each one adds acts on The stratum corneum, The living epidermis, Not established for Medik8 Crystal Retinal 6 and The living epidermis, The stratum corneum for The Ordinary Alpha Arbutin 2% + HA. That is the layer each is understood to act on, not how deep it travels.

Only in Crystal Retinal 6

Both share

No active in common.

Only in Alpha Arbutin 2% + HA

The molecule doing the work

Crystal Retinal 6Glycerin
Alpha Arbutin 2% + HAAlpha Arbutin

Better for…

  • Dark spots & uneven toneEither works
  • Fine lines & firmnessCrystal Retinal 6
  • Dryness & dehydrationCrystal Retinal 6
  • Sensitive, reactive skinAlpha Arbutin 2% + HA

The Ordinary Alpha Arbutin 2% + HA is the cheaper of the two (~€9 vs ~€86).

Ready to pick one?

Crystal Retinal 6 on amazon.comAlpha Arbutin 2% + HA on amazon.com

Affiliate links, so a purchase sends us a small commission at no extra cost to you. As an Amazon Associate, Glow Simplified earns from qualifying purchases. We make and sell nothing here, so the verdict above never bends toward a sale.

And if you keep both?

Most people reading a comparison are choosing. If you already own both, the question is a different one, and it has an answer.

These clash.

Retinoids and exfoliants both speed up cell turnover, so together they tend to stack irritation and can wear down your barrier.

Use them on alternate nights rather than the same evening.

Common questions

Is Medik8 Crystal Retinal 6 or The Ordinary Alpha Arbutin 2% + HA better for fine lines & firmness?

For fine lines & firmness, Medik8 Crystal Retinal 6 is the stronger pick by our read of the two formulas. Medik8 Crystal Retinal 6 does more across the board (it leads on hydration, barrier repair, anti-aging), while The Ordinary Alpha Arbutin 2% + HA is the simpler, more pared-back pick. Reach for Medik8 Crystal Retinal 6 if you want the actives; The Ordinary Alpha Arbutin 2% + HA if you want fewer ingredients doing less, gently. The Ordinary Alpha Arbutin 2% + HA keeps clear of pregnancy-flagged actives, while Medik8 Crystal Retinal 6 carries one that is best paused in pregnancy.

Which is cheaper, Medik8 Crystal Retinal 6 or The Ordinary Alpha Arbutin 2% + HA?

The Ordinary Alpha Arbutin 2% + HA is the cheaper of the two (~€9 vs ~€86).

Can I use Medik8 Crystal Retinal 6 and The Ordinary Alpha Arbutin 2% + HA together?

They are both serums, so you would normally pick one rather than layer both in the same step. You can keep both and alternate them (morning and night, or on different days) if you like variety, but you do not need two.

What the scene shows

The cross-section at the top of this page is not decoration and not a diagram of the skin in general: it places the molecules these two are sold on at the layer each is understood to act on. Medik8 Crystal Retinal 6 is placed by Glycerin (the stratum corneum), Retinal (the living epidermis), Squalane (the stratum corneum). The Ordinary Alpha Arbutin 2% + HA is placed by Alpha Arbutin (the living epidermis), Lactic acid (the stratum corneum). A layer is where an ingredient does its work, never how deep it travels, and never a claim about how well it works.

Back up to the scene

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