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Cos De BAHA Azelaic Acid Serum (AZ15)
Bestseller
Cos De BAHA

Azelaic Acid Serum (AZ15)

Serum · 30 mL

30%$10.32$14.74

Where to buy

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Key ingredients

Azelaic AcidPanthenolLicoriceAllantoinCeramides

Found in the full ingredient list below. Check how it layers with your routine

Made for

Sensitive
Full ingredients (24)
  1. Water/Aqua
  2. Propylene Glycol
  3. Azelaic Acid
  4. Sodium Hydroxide
  5. 1,2-Hexanediol
  6. Polysorbate 20
  7. Dimethyl Sulfone
  8. Propanediol
  9. Betaine
  10. Panthenol
  11. Dipotassium Glycyrrhizate
  12. Allantoin
  13. Ceramide NP
  14. Sodium Hyaluronate
  15. Hydrolyzed Hyaluronic Acid
  16. Centella Asiatica Extract
  17. Madecassoside
  18. Hydroxyethylcellulose
  19. Sodium Polyacrylate
  20. Polyglyceryl-10 Laurate
  21. Camellia Sinensis Leaf Extract
  22. Sambucus Nigra Flower Extract
  23. Momordica Charantia Fruit Extract
  24. Leontopodium Alpinum Extract

Listed from highest to lowest concentration. Formulas change, so check the packaging if you avoid an ingredient.

Product details

An amber dropper bottle of Azelaic Acid Serum AZ15 on a warm ivory table beside centella leaves and elderflowers

Brightening + calm

Azelaic acid third on the list, with MSM and cica, in a simple serum for uneven tone and rough texture.

Cos De BAHA keeps its AZ15 serum short and focused. Azelaic acid comes right after water and propylene glycol to brighten skin tone and refine texture, MSM soothes and supports elasticity, and centella with madecassoside calms and protects skin that feels damaged.

Azelaic acid, printed on the bottle
15%
Azelaic acid, printed on the bottle
MSM, printed on the bottle
1%
MSM, printed on the bottle
Azelaic acid’s place on the list
#3
Azelaic acid’s place on the list
A glossy pool of clear serum with droplets between centella leaves and white elderflowers

What’s inside

The ingredients doing the work

  • Azelaic acid

    The star of the formula. It brightens the look of uneven skin tone and improves skin texture.

    No. 3 of 24 on the list

  • MSM

    Methylsulfonylmethane, listed by its chemical name. It soothes the skin and helps improve the look of elasticity and tone.

    No. 7 of 24 on the list

  • Cica

    Centella extract and its purified active, madecassoside, calm and protect damaged-feeling skin.

    No. 16, 17 of 24 on the list

  • Soothing support

    Pro-vitamin B5, a licorice-root derivative, allantoin and betaine keep skin comfortable while the acid works.

    No. 9, 10, 11, 12 of 24 on the list

  • Ceramide + hyaluronic acid

    A skin-identical lipid and two forms of hyaluronic acid add moisture and help the barrier hold on to it.

    No. 13, 14, 15 of 24 on the list

Supporting botanicals

  • Green tea
  • Elderflower
  • Bitter melon
  • Edelweiss
An amber dropper bottle of AZ15 serum beside a small pool and drops of clear serum and a centella leaf

How to use

After toner

  1. 1

    Prep

    Cleanse and tone, then let skin dry.

  2. 2

    Drop

    Dispense a few drops of serum with the dropper.

  3. 3

    Smooth

    Spread it evenly over the face and pat gently until absorbed.

  4. 4

    Seal

    Follow with moisturizer, and sunscreen during the day.

Three clear drops of serum beside a single centella leaf on warm ivory stone

Brighter, smoother-looking skin

A focused azelaic acid step for uneven tone and texture, with cica and MSM to keep skin calm.

Good to know

  • Azelaic acid at 15% can tingle or itch briefly when you start. Patch test first, and stop if irritation doesn’t settle.
  • Brightening care works best with daily sunscreen.
  • No fragrance or essential oils on the ingredient list.
  • 30 mL amber glass dropper bottle.