No.6 Deep Sleep Mask Serum
10% Azelaic Acid Serum for Redness Relief

A serum built around Niacinamide and Hyaluronic acid, for hydration and barrier repair.

A serum built around Azelaic acid, for pollution defence and hydration.

Serum
Serum
40 ingredients
17 ingredients

Brand price

USD 21.00 · checked 26 Sept 2026 · brand's site

Brand price

USD 20.00 · checked 26 Sept 2026 · brand's site

No retailer listed yet
No retailer listed yet
Brand from South Korea
Brand country not recorded

At a Glance

They come out differently on Pore-clogger-free; that row is shaded. Tap any answer to see why.

Key Ingredients

  • Polysorbates (Tween emulsifiers)1

    Polysorbate (Tween) emulsifiers.

    Polysorbate 60

  • Azelaic acid1

    Works on acne, redness and pigmentation at once.

    Azelaic Acid

Benefits

Concerns

  • May Trigger Acne1

    Can clog pores or trigger breakouts.

    Tocopherol

  • May Worsen Seborrheic Dermatitis1

    May feed the yeast involved in seborrheic dermatitis.

    Polyglyceryl-10 Laurate

  • May Worsen Keratosis Pilaris1

    May clog follicles or strip skin prone to keratosis pilaris.

    Tocopherol

  • May Worsen Irritation1

    May cause stinging, redness or sensitivity.

    Tocopherol

Ingredients Side-by-side

Show highlights for:

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Similar Comparisons

Each product against its closest dupes.