Amino Acids + B5

Image: theordinary.com

The Ordinary

Amino Acids + B5

A serum built around Panthenol and Lactic acid, for hydration and barrier repair.

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Brand price

USD 8.28 · checked 25 Sept 2026 · on the brand's site

From the brand

What the brand says about this product. Our ingredient analysis follows below.

The brand recommends it for

  • Normal skin
  • Dryness & dehydration

How to use

Apply a few drops to the face in the morning and evening. A tingling sensation can be expected after application. If the sensation is too strong, the formula can be mixed with other creams or serums of your preference before each application to reduce the strength. If irritation occurs, rinse off, cease use, and consult a physician. Use only as directed on unbroken skin. Patch testing prior to use is advised. Keep out of reach of children.

Caution

A tingling sensation can be expected after application. If the sensation is too strong, the formula can be mixed with other creams or serums of your preference before each application to reduce the strength. If irritation occurs, rinse off, cease use, and consult a physician. Use only as directed on unbroken skin. Patch testing prior to use is advised. Keep out of reach of children.

What's inside

Ingredients List

1 trigger at least one check · 25 trigger none

clear
AquaSolvent
0 / —
clear
PropanediolViscosity Controlling
0-1 / —
  • Hydrating
clear
BetaineHumectant
0 / —
  • Hydrating
clear
Sodium PCAHumectant
0 / 0
  • Hydrating
clear
PanthenolSkin Conditioning
0 / 0
  • Panthenol (provitamin B5)
  • Barrier Repair
  • Hydrating
  • Reduces Irritation
clear
Sodium LactateHumectant
—
  • Lactic acid
  • Exfoliating
  • Hydrating
clear
ArginineSkin Conditioning
0 / —
clear
PCAHumectant
—
clear
Aspartic AcidSkin Conditioning
0 / —
clear
GlycineSkin Conditioning
0 / —

Key Ingredients

  • Panthenol (provitamin B5)1

    Provitamin B5 — a humectant and soother.

    Panthenol

  • Polysorbates (Tween emulsifiers)1

    Polysorbate (Tween) emulsifiers.

    Polysorbate 20

  • AHA1

    Alpha hydroxy acids — water-soluble chemical exfoliants.

    Citric Acid

  • Lactic acid1

    An AHA that also acts as a humectant.

    Sodium Lactate

Benefits

Concerns

  • May Worsen Seborrheic Dermatitis1

    May feed the yeast involved in seborrheic dermatitis.

    Polysorbate 20

Ingredients Explained

Click on any ingredient to learn more about it

Dupes

See all 10 dupes