The Ordinary Retinol 0.5% in Squalane Review

The Ordinary Retinol 0.5% in Squalane is the bottle this site points at more often than any other. It is the top pick on our retinol serum roundup, our beginner roundup and our serum versus cream comparison, and it has never had a page of its own. This is that page. It is reviewed the way every product on this site is — from what the brand publishes, never from hands-on use, because we own no units and run no trials. The method is set out in how we pick.

One sourcing note, in the open. The Ordinary’s product URLs carry an opaque numeric ID that cannot be guessed, and a wrong guess quietly returns a different product’s page with a 200 status. The page below was resolved from the brand’s own site search and confirmed to be the 0.5% product before anything was read off it.

The verdict in one paragraph

This is still the retinol we would hand most people who have decided to commit, and the reason is the number on the front. Almost nothing else on a drugstore shelf tells you how much retinol it contains; this tells you, and it sells a 0.2% and a 1% so the figure is a ladder rather than a marketing flourish. The formula is eight ingredients: squalane, caprylic/capric triglyceride, jojoba seed oil, retinol, tomato fruit extract, rosemary leaf extract, hydroxymethoxyphenyl decanone and BHT. Three caveats are worth knowing before you buy, and only one of them is usually mentioned. The base is an oil — the brand’s own highlights read oil-free: No, and Suited for: Dry Skin. There is no fragrance-free claim in those highlights, though no fragrance appears in the list. And the brand asks you to refrigerate the bottle after opening and finish it within three months, which is a genuine constraint that changes what the low price actually buys.

At a glance

The Ordinary Retinol 0.5% in Squalane

Stated active: 0.5% retinol, described by the brand as moderate strength. Ingredients: eight in total, no fragrance among them. Format: anhydrous — water-free, oil-based.

Size: 30 ml, the only size sold. Storage: refrigerate after opening, use within three months, per the brand.

$9.30 · View on Amazon

Price as of October 19, 2026. #ad How we’re funded

Product image supplied by Amazon.

What is on the label

The full list, as published: Squalane, Caprylic/Capric Triglyceride, Simmondsia Chinensis (Jojoba) Seed Oil, Retinol, Solanum Lycopersicum (Tomato) Fruit Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Hydroxymethoxyphenyl Decanone, BHT. Eight entries, and worth walking through, because four of them are doing a job that explains the product.

The first three are the vehicle. Squalane, caprylic/capric triglyceride and jojoba seed oil are emollients. There is no water in this formula at all — the brand gives the format as “Serum: Anhydrous” — and that is a deliberate choice rather than a cost saving. Retinol degrades in water, and taking the water out removes the pH problem and much of the stability problem in one move. It also means the product behaves on skin like a light facial oil, which is the single thing most reviews of it fail to say plainly.

The retinol is fourth. That is exactly what a declared 0.5% in an oil base should look like, and it is not a mark against the product. Ingredient order reflects quantity, not importance; 0.5% of anything sits below the carrier holding it.

The last two are the stability system. Hydroxymethoxyphenyl decanone is an antioxidant and BHT is a preservative antioxidant used to stop oils and sensitive actives going off. Their presence is the clearest signal on the label of what this category’s real problem is: retinol oxidizes, and a formulator who was not worried about it would not need two of these in an eight-item list.

There is no fragrance, and no fragrance-free claim. The brand’s highlights block lists water-free, alcohol-free, silicone-free, vegan, gluten-free and cruelty-free as yes, and oil-free as no. Fragrance-free is not among them. We report the absence of the claim and the absence of fragrance from the list as two separate facts, which is the pattern across this brand’s range.

The storage instruction nobody follows

On its own product page, under Notes, The Ordinary writes: “Once opened, this formulation should be refrigerated and used within a three-month period.” The usage directions repeat it: “Refrigerate after opening.”

This is the most consequential sentence on the label and it is almost never mentioned in discussion of this product. Two things follow from it.

The first is practical: if you are going to buy it, keep it in the fridge. It is a free intervention against the one degradation route the formula is clearly worried about. The second is about value. A 30 ml bottle used a few times a week will not be finished in three months by most people, so the honest way to read the price is as a quarterly cost rather than as a cheap bottle that lasts a year. It is still inexpensive on that basis — comfortably the cheapest way to buy a retinol with a published strength — but it is not the giveaway the sticker implies, and anyone comparing it against a pricier airless-pump rival should do the arithmetic on that footing.

What the brand says it is for — and what it says it is not

Three statements on the page deserve to be read literally.

“Suited for: Dry Skin.” That is the only skin type the brand lists. Combined with oil-free: No, it is a clear steer: this was formulated for skin that will welcome an oil. Oily-skinned readers are not excluded and many use it happily, but if you are oily and have a choice, the format question is worth reading first at retinol serum vs cream.

“This product is not a treatment for acne.” Printed on the brand’s own page. It is a statement about this product’s labeling rather than about vitamin A in general — over-the-counter adapalene is a genuine acne treatment, and we cover it in the adapalene guide. If your reason for buying a retinol is breakouts, that is the page to read instead of this one — along with best moisturizer for acne-prone skin, which is the step that decides whether anyone actually finishes a course of it.

“This product must not be used in conjunction with other retinoids.” Including retinol or retinoic acid. Obvious once stated, and routinely broken by people running a retinol serum under a retinol night cream.

Where 0.5% actually sits

The brand calls this “moderate strength” and positions it as the middle of a three-rung ladder, with an explicit instruction: “Start with Retinol 0.2% in Squalane and slowly work your way up to Retinol 0.5% in Squalane and Retinol 1% in Squalane.” It also offers an off-ramp for reactive skin, pointing people prone to sensitivity towards its Granactive Retinoid emulsion instead.

That ladder is the whole argument for buying this range rather than a branded alternative, and it is worth being precise about why. The published evidence for topical retinol concerns collagen and the visible signs of photoaging, and it is dose- and time-dependent — which means a product that will not tell you its dose cannot be compared with one that will. Look at our own registry: of the retinol creams we rank, every single one records “Not published” for concentration. Among serums, only this one and the Paula’s Choice 1% print a figure. Buying a stated 0.5% is not a claim that it outperforms an unstated rival; it is a claim that you can tell what happened when you move up or down, which over a year of use is worth more than a marginally better base.

The caution that comes with it is the brand’s own, and it is accurate: “Retinol can cause irritation, redness, and peeling, especially around the eyes and mouth, in the early stages of use while skin builds tolerance.” If that is where you are, retinol side effects covers what is normal and what is a reason to stop, and how often to use retinol covers the schedule that avoids most of it.

How to use it

The directions are short: “Apply a few drops to the face in the evening. Do not use with other retinoid products. Use sun protection during the day.” The brand also advises patch testing first, and applying only to unbroken skin.

Our own additions are the ones we would give for any retinoid. Start twice a week rather than nightly and build up over six to eight weeks. Apply it to dry skin, not damp, and put your moisturizer over the top rather than underneath if you are peeling — the layering order is in skincare routine order. Keep it away from the eyelids and the corners of the nose and mouth, which is exactly where the brand’s caution says irritation shows up first. And treat the sunscreen line as non-negotiable: retinoids increase sensitivity to UV, and the entire benefit you are chasing is a photoaging benefit, which sun exposure works directly against. Our picks for people using a retinoid are at best sunscreen for retinol users.

Who should buy it, and who should not

Buy it if you have used a low-strength retinoid without drama and want to move up deliberately; if you have dry or normal skin and like an oil finish; if you want a formula with nothing in it beyond the active, the carrier and two antioxidants; or if you simply want to find out whether retinol suits you without spending much.

Buy something else ifyou have never used a retinoid — start at the 0.2% or at a buffered branded serum; if you are oily and dislike oils on your face; if you are treating acne rather than texture or fine lines; if you will not refrigerate it; or if you are pregnant or breastfeeding, where the brand’s own note is to avoid retinoids entirely.

One more honest caveat about what this product is not. It is a cosmetic retinol, not a prescription retinoid, and the AAD’s own explanation of the difference is worth reading if you are expecting prescription results from it. For the full comparison we have retinol vs tretinoin.