Isntree C-Niacin Toning Ampoule vs The Inkey List 10% Azelaic Acid Serum for Redness Relief

Isntree

The Inkey List

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

32 ingredients

17 ingredients

Brand price

Not recorded · brand's site

Brand price

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

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At a Glance

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

Vitamin C derivative (stable)1
Stable derivatives of ascorbic acid.
3-O-Ethyl Ascorbic Acid
Panthenol (provitamin B5)1
Provitamin B5 — a humectant and soother.
Panthenol
Polysorbates (Tween emulsifiers)1
Polysorbate (Tween) emulsifiers.
Polysorbate 80
Hyaluronic acid1
Hyaluronic acid and its salts; a humectant that binds water to the skin.
Sodium Hyaluronate

Polysorbates (Tween emulsifiers)1
Polysorbate (Tween) emulsifiers.
Polysorbate 60
Azelaic acid1
Works on acne, redness and pigmentation at once.
Azelaic Acid

Hydrating2
Boosts hydration and relieves dry, tight skin.
Glycerin, Propanediol
Barrier Repair2
Strengthens and restores the skin's natural barrier.
Allantoin, Glycerin
Reduces Irritation1
Eases discomfort and supports skin resilience.
Allantoin
Redness Reducing2
Soothes visible redness and calms irritation.
Allantoin, Azelaic Acid

May Worsen Seborrheic Dermatitis2
May feed the yeast involved in seborrheic dermatitis.
Moringa Oleifera Seed Oil, Polysorbate 80
May Worsen Oily Skin1
May increase shine or excess oil.
Moringa Oleifera Seed Oil

May Trigger Acne1
Can clog pores or trigger breakouts.
Sorbitan Isostearate
May Worsen Seborrheic Dermatitis2
May feed the yeast involved in seborrheic dermatitis.
Polysorbate 60, Sorbitan Isostearate
May Worsen Keratosis Pilaris1
May clog follicles or strip skin prone to keratosis pilaris.
Sorbitan Isostearate

Show highlights for:

Hippophae Rhamnoides Fruit Extract
Skin Conditioning
Butylene Glycol
Humectant
1 / 0
- Hydrating
Pentylene Glycol
Skin Conditioning
0-1 / —
Glycerin (in both products)
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Betaine
Humectant
0 / —
- Hydrating
Water
Skin Conditioning
Niacinamide
Smoothing
0 / —
- Niacinamide
- Acne Fighting
- Barrier Repair
- Brightening
- Dark Spots
- Even Tone
- Oil Control
- Pore Refining
- Redness Reducing
Propanediol (in both products)
Viscosity Controlling
0-1 / —
- Hydrating
Aloe Barbadensis Leaf Extract
Emollient
Melia Azadirachta Flower Extract
Skin Conditioning

Aqua
Solvent
0 / —
Azelaic Acid
Buffering
- Azelaic acid
- Acne Fighting
- Dark Spots
- Even Tone
- Redness Reducing
Propanediol (in both products)
Viscosity Controlling
0-1 / —
- Hydrating
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion Stabilising
Phenoxyethanol
Preservative
0 / —
Acacia Senegal Gum
Fragrance
Xanthan Gum
Cleansing
0-1 / —
Allantoin (in both products)
Skin Conditioning
0 / 0
- Reduces Irritation
- Smoothing
Glycerin (in both products)
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Ethylhexylglycerin
Skin Conditioning

These ingredients are found in both products.

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

Glycerin
Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care, Perfuming, Humectant, Skin Protecting, Solvent, Viscosity Controlling
Glycerin may be plant, synthetic or animal depending on the supplier.
Learn more about Glycerin →
Propanediol
Solvent, Viscosity Controlling
Propanediol is the organic compound that conforms to the formula
Learn more about Propanediol →
Allantoin
Skin Conditioning, Skin Protecting, Soothing
Urea, (2,5-dioxo-4-imidazolidinyl)-
Learn more about Allantoin →