The INKEY List Retinol Serum Versus The Ordinary Granactive Retinoid 2% In Squalane

The INKEY List Retinol Serum Versus The Ordinary Granactive Retinoid 2% In Squalane

This anti-aging serum is formulated around Hydroxypinacolone Retinoate and Retinol to soften the look of wrinkles and refine skin texture.

This anti-aging treatment is formulated around Hydroxypinacolone Retinoate and Squalane to soften the look of wrinkles and refine skin texture.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Butylene Glycol

Propanediol

Dicaprylyl Carbonate

Dimethicone

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Caprylyl Glycol

Phospholipids

Caprylic/Capric Glycerides

Squalane

Dimethyl Isosorbide

Glycine Soja Extract

Carbomer

Sodium Ascorbate

Tocopherol

Polysorbate 60

Tocopheryl Acetate

Glycolipids

Sodium Hydroxide

Disodium EDTA

Hydroxypinacolone Retinoate

Retinol

Glycine Soja Sterols

Leuconostoc/Radish Root Ferment Filtrate

PEG-40 Hydrogenated Castor Oil

Hyaluronic Acid

Polysorbate 20

Palmitoyl Tetrapeptide-7

Palmitoyl Tripeptide-1

Phenoxyethanol

Water, Glycerin, Butylene Glycol, Propanediol, Dicaprylyl Carbonate, Dimethicone, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Caprylyl Glycol, Phospholipids, Caprylic/Capric Glycerides, Squalane, Dimethyl Isosorbide, Glycine Soja Extract, Carbomer, Sodium Ascorbate, Tocopherol, Polysorbate 60, Tocopheryl Acetate, Glycolipids, Sodium Hydroxide, Disodium EDTA, Hydroxypinacolone Retinoate, Retinol, Glycine Soja Sterols, Leuconostoc/Radish Root Ferment Filtrate, PEG-40 Hydrogenated Castor Oil, Hyaluronic Acid, Polysorbate 20, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Phenoxyethanol

C12-15 Alkyl Benzoate

Bisabolol

Caprylic/Capric Triglyceride

Simmondsia Chinensis Seed Oil

Solanum Lycopersicum Fruit Extract

Rosmarinus Officinalis Leaf Extract

Hydroxymethoxyphenyl Decanone

Squalane, C12-15 Alkyl Benzoate, Bisabolol, Caprylic/Capric Triglyceride, Dimethyl Isosorbide, Simmondsia Chinensis Seed Oil, Hydroxypinacolone Retinoate, Solanum Lycopersicum Fruit Extract, Rosmarinus Officinalis Leaf Extract, Hydroxymethoxyphenyl Decanone

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

Dimethyl Isosorbide (often shortened to DMI) is a sugar-derived solvent made from sorbitol. It's used to dissolve tricky ingredients and help them mix smoothly into a formula.

Many actives sit as gritty crystals when undissolved, so DMI swoops in to full dissolve them. This helps improve texture, stability, and how evenly an active is distributed.

It does have a penetration-enhancing reputation that is a bit more nuanced than marketing suggests; a cell study on human skin found that 10% DMI didn't significantly boost the permeation of Hydroquinone, Salicylic Acid, or Octadecenedioic Acid compared to controls (though it did improve their solubility in the formula itself).

Typical usage concentrations usually range from 1-10% depending on the formula's needs; this ingredient is also well tolerated at these levels.

Hydroxypinacolone Retinoate (aka Granactive Retinoid or HPR) is a retinoid that is part of the same vitamin A family as retinol.

It is an ester of retinoic acid that binds directly to your skin's retinoic acid receptors so it doesn't need your skin to convert it through several steps before it can do anything.

In practice, this means it does the classic retinoid jobs in a formula:

The best part is that it can do all this with noticeably less redness, flaking, and stinging than traditional retinoids.

That gentle reputation is backed by lab work as well; a 2018 study on skin models found that HPR triggered higher retinoid-gene activity than retinol, retinal, or retinyl propionate at the same concentrations while being less irritating to cells.

It also boosted procollagen production to levels similar to retinoic acid itself.

A 2023 study showed HPR works synergistically with retinyl propionate to switch on collagen-building pathways and a 2025 clinical serum study in women with mild photoaging saw improvements in wrinkles and elasticity (though that formula also contained retinol, peptides, and Silybin).

One naming quirk worth mentioning:

You'll likely see this ingredient sold under the trade name "Granactive Retinoid", which is actually only 10% HPR blended with 90% Dimethyl Isosorbide solvent. This means a 5% Granactive Retinoid really only means about 0.5% HPR.

Finished products typically land somewhere between 0.05-1% and it's happiest formulated at a mildly acidic to neutral pH (~5.5-6.5).

Another perk is that this is one of the more light- and temperature-stable retinoids which is a nice bonus for shelf life.

Squalane is the hydrogenated and shelf-stable form of squalene (a lipid that naturally occurs in human sebum).

It is an emollient and skin conditioning agent that is able to integrate seamlessly into the skin's lipid barrier without clogging pores.

This is due to how structurally similar it is to what your skin already produces.

Though it is mostly an emollient that helps soften and hydrate skin, it also has some humectant and occlusive action. Humectants help the skin retain moisture while occlusives seal it in, making squalane a triple-threat moisturizer.

Research shows it has antioxidant capabilities that help protect against stressors like UV exposure, specifically UVA induced oxidative stress. This study also found that it supports collagen biosynthesis in human dermal fibroblasts.

No clinical study has reported significant adverse effects and irritation reactions are very rare from this ingredient (even at 100% concentration).

Overall, it's a fantastic ingredient for hydration and is suitable for all skin types.

This depends on the source. Squalane can be derived from both plants and animals. Most squalane used in skincare comes from plants.

Please note: the source of squalane is only known if disclosed by the brand. We recommend reaching out to the brand if you have any questions about their squalane.

Read more about squalene with an "e".

Though squalane is often called an oil, it’s technically not one. It is a hydrocarbon, meaning it is only made of carbon and hydrogen. True oils are triglycerides and made of fatty acids and glycerol.

The term “oil-free” isn’t regulated so companies can define it however they want. Some exclude all oils, while others just avoid mineral oil or comedogenic oils.

Squalane has a comedogenic rating of 1 from the original 1972 study that tested raw ingredients under occlusion on rabbit ears. This system is not standardized or peer-reviewed, and using the raw ingredients is very different from how diluted cosmetic formulations are used on human skin.

A comedogenic rating of 1 means it is "unlikely to clog pores" according to the original rating system.

The overall formula of a product matters more than the individual ingredients on whether or not it will cause clogged pores.

Similar Comparisons