Neutrogena Hydro Boost Hydrating Serum vs The Inkey List 10% Azelaic Acid Serum for Redness Relief

Neutrogena

The Inkey List

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

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

Serum

30 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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Brand from United States

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At a Glance

They come out differently on Fragrance-free, EU-allergen-free, Silicone-free and Cruelty-free; those rows are shaded. Tap any answer to see why.

Zinc salt (sebum/soothing)1
Zinc salts, used for sebum control and soothing.
Zinc Gluconate
AHA1
Alpha hydroxy acids — water-soluble chemical exfoliants.
Citric Acid
Lactic acid1
An AHA that also acts as a humectant.
Sodium Lactate
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

Hydrating9
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Dimethicone, Dimethiconol, Glycerin, Propylene Glycol, Sodium Hyaluronate, Sodium Lactate, Sodium PCA, Sorbitol
Barrier Repair8
Strengthens and restores the skin's natural barrier.
Cetearyl Olivate, Copper Gluconate, Dimethicone, Dimethiconol, Glycerin, Isododecane, Neopentyl Glycol Diheptanoate, Propylene Glycol
Reduces Irritation2
Eases discomfort and supports skin resilience.
Bisabolol, Zinc Gluconate
Redness Reducing1
Soothes visible redness and calms irritation.
Bisabolol

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 Dermatitis3
May feed the yeast involved in seborrheic dermatitis.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Cetearyl Olivate, Sorbitan Olivate
May Worsen Irritation2
May cause stinging, redness or sensitivity.
Benzyl Alcohol, Fragrance
May Worsen Eczema2
May worsen itching or irritation for eczema-prone skin.
Benzyl Alcohol, Fragrance
May Worsen Rosacea1
Can trigger flare-ups in rosacea-prone skin.
Fragrance

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:

Water
Skin Conditioning
Glycerin (in both products)
Humectant
0 / 0
- Possibly animal-derived
- Hydrating
Dimethicone
Emollient
1 / 0
- Silicones
- Barrier Repair
- Hydrating
- Smoothing
Butylene Glycol
Humectant
1 / 0
- Hydrating
Neopentyl Glycol Diheptanoate
Emollient
Aluminum Starch Octenylsuccinate
Anticaking
0-1 / —
Isododecane
Emollient
Dimethiconol
Emollient
0-1 / —
- Silicones
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Viscosity Controlling
0-1 / —
Ethylhexylglycerin (in both products)
Skin Conditioning

Aqua
Solvent
0 / —
Azelaic Acid
Buffering
- Azelaic acid
- Acne Fighting
- Dark Spots
- Even Tone
- Redness Reducing
Propanediol
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 (in both products)
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.

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 →
Ethylhexylglycerin
Deodorant, Skin Conditioning
Ethylhexylglycerin is the organic compound that conforms to the formula
Learn more about Ethylhexylglycerin →
Sodium Hydroxide
Buffering, Denaturant
Sodium hydroxide
Learn more about Sodium Hydroxide →