Isntree Hyper Vitamin C 23 Serum vs The Inkey List 10% Azelaic Acid Serum for Redness Relief

Isntree

The Inkey List

A serum built around Vitamin C and Vitamin C, for hydration and barrier repair.

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

Serum

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 Fungal-acne-safe and Pore-clogger-free; those rows are shaded. Tap any answer to see why.

Vitamin E1
Tocopherols — fat-soluble antioxidants.
Tocopherol
Vitamin C (L-ascorbic acid)1
L-ascorbic acid, the unesterified form of vitamin C.
Ascorbic Acid
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 60
Azelaic acid1
Works on acne, redness and pigmentation at once.
Azelaic Acid

Hydrating6
Boosts hydration and relieves dry, tight skin.
Betaine, Hydroxyethyl Urea, Panthenol, Polyglycerin-3, Propanediol, Tocopherol
Barrier Repair3
Strengthens and restores the skin's natural barrier.
Betaine, Panthenol, Tocopherol
Reduces Irritation1
Eases discomfort and supports skin resilience.
Panthenol
Anti-Aging2
Softens lines and helps skin look youthful.
Adenosine, Ascorbic 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 Trigger Acne1
Can clog pores or trigger breakouts.
Tocopherol
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

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:

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
Skin Conditioning
0 / 0
- Reduces Irritation
- Smoothing
Glycerin
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Ethylhexylglycerin (in both products)
Skin Conditioning

These ingredients are found in both products.

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

Propanediol
Solvent, Viscosity Controlling
Propanediol is the organic compound that conforms to the formula
Learn more about Propanediol →
Ethylhexylglycerin
Deodorant, Skin Conditioning
Ethylhexylglycerin is the organic compound that conforms to the formula
Learn more about Ethylhexylglycerin →
Gardenia Florida Fruit Extract
Colorant, Skin Conditioning
Gardenia Florida Fruit Extract is the extract of the fruit of Gardenia florida. The accepted scientific name for Gardenia florida is Gardenia jasminoides.
Learn more about Gardenia Florida Fruit Extract →