The Inkey List Hyaluronic Acid Serum

Short hyaluronic acid serum to layer under moisturiser.

Green List ingredients2 in the INCI

Typical price£10–£14

Size30ml

Best for

Dehydrated or tight-feeling sensitive skin; a simple first serum under moisturiser.

Texture

Serum; The Inkey List says to apply it to damp skin.

Avoid if

You want barrier lipids such as ceramides in your serum.

Red List audit

This formula passed the Skincare Clarity Red List screen.

Fragrance / Parfum and listed fragrance allergens: none listed.
Essential oils: none listed.
Drying alcohols: none listed.
Other screened items, including MI/MCI, parabens and SLS/SLES: none listed.

See the full Red List screening framework

Quick verdict

Fourteen ingredients, and the main work happens in the first four: water, propanediol, sodium hyaluronate and glycerin. The Inkey List says the serum holds 2% hyaluronic acid in three molecular weights; the label shows two names for it, sodium hyaluronate third and hyaluronic acid ninth.

Explore all 14 ingredients and their roles

Why it made the cut

Two peptides close the list (palmitoyl tetrapeptide-7 and palmitoyl tripeptide-1), and a radish root ferment filtrate sits eighth. None of them changes what this is: a light hydrating layer that the brand says to apply first, to damp skin, before moisturiser.

It's one of the lowest-priced serums in our selection. The Ordinary Hyaluronic Acid 2% + B5 adds panthenol and comes in a 60ml bottle; Medik8 Hydr8 B5 Serum is the premium alternative.

Where to buy

Current retailer

Cult Beauty

Typical UK price £10–£14 for 30ml. Check the retailer for the current price and availability.

View at Cult Beauty

Green List analysis

Sodium hyaluronate and glycerin sit third and fourth, with a second hyaluronic form ninth.

Hyaluronic Acid Family (Sodium Hyaluronate; Hyaluronic Acid) – water-binding hydration support
glycerin – humectant hydration support

Full ingredient list

Ingredients and roles

Every ingredient in label order, coloured by role. Select an ingredient for a short explanation.

Colour key – select a role to highlight its ingredients

2 Green List matches across 3 ingredients. The Hyaluronic Acid Family appears twice.

Colours show one selected role; many ingredients do more than one job. Ingredients above 1% are listed by weight; below 1% they can appear in any order. The label doesn't show where that line falls or how much of each ingredient is used.

Ingredient list source: Cult Beauty, checked 25 October 2026.
Ingredient roles and explanations: Skincare Clarity, based on manufacturer information, published ingredient assessments and the EU CosIng database, checked 4 November 2026.

For the latest information, review the ingredient list printed on the product packaging before use.

Last reviewed: 25 October 2026