Is Squalane Comedogenic? A Guide for Clear-Looking Skin

Short answer: squalane is considered a low pore-clogging risk. It is a fully saturated, hydrogenated form of squalene, so it does not oxidize into the squalene peroxides that were measured as strongly comedogenic in rabbit-ear studies, and the Cosmetic Ingredient Review panel found it non-irritating at 100% concentration. Whether a finished product feels light on your skin depends on the whole formula, not on squalane alone.

I get this question from customers who have been told to avoid every face oil. That advice skips the chemistry. Below I explain what the comedogenic scale actually measures, why the one-letter difference between squalane and squalene matters, how I use squalane at the bench, and how to test any oil on your own skin before you commit to it.

What "comedogenic" means, and where the ratings come from

"Comedogenic" describes an ingredient's tendency to contribute to clogged-looking pores (comedones). The familiar 0 to 5 scale comes from older animal testing, mainly the rabbit-ear assay, where raw materials were applied to the inner ear of rabbits and the follicles were examined afterward. That model was useful for ranking raw ingredients, but it was never designed to predict how a finished cream behaves on a human face.

Human testing changed the picture. Draelos and DiNardo (2006) applied finished cosmetic products to the upper backs of a small panel of people who form comedones easily, three times a week for four weeks, and counted microcomedones with cyanoacrylate biopsies. Their conclusion: finished products made with ingredients that score as comedogenic are not necessarily comedogenic. Dose, the rest of the formula, and how the product is used all change the outcome.

So read any single number with caution. Popular online charts place squalane at the low end of the 0 to 5 scale. I could not trace those chart numbers to a published squalane test, so I am not quoting a specific score here. What I can show you is the published evidence on the chemistry, which is more useful anyway.

Squalane vs squalene: one letter, very different behavior

Squalene (with an "e") is a natural lipid your own skin makes. Picardo and colleagues (2009) report that squalene makes up about 12% of human sebum, alongside triglycerides and fatty acids (57.5%) and wax esters (26%). Squalene has six double bonds, which makes it reactive. When it is exposed to UV light and air, it oxidizes.

That oxidation is the part that matters for pores. In the rabbit-ear model:

• Motoyoshi (1983) found that squalene itself was scarcely comedogenic, but squalene peroxides (squalene after UVA exposure) were highly comedogenic, and the size of the comedones tracked with lipid peroxide levels.
• Chiba and colleagues (2000) isolated squalene monohydroperoxide, the first product formed when squalene is exposed to UVA, and measured it as more comedogenic than well-known comedogenic cosmetic ingredients. Plain squalene was less comedogenic.

Squalane (with an "a") is squalene after hydrogenation: hydrogen is added across all of those double bonds, leaving a fully saturated hydrocarbon. With no double bonds left, it does not form those peroxides the way squalene does. That is the real reason squalane has a reputation as a pore-friendly oil. It is stable, so it stays the ingredient the formulator put in the bottle.

Safety data

The Cosmetic Ingredient Review (CIR) Expert Panel published its safety assessment of squalane and squalene in 1982. The panel reported low acute toxicity by all tested routes, no irritation to rabbit skin or eyes at 100% concentration, and that formulations containing squalene were not significant human skin irritants or sensitizers. It concluded both are safe as cosmetic ingredients at the use practices and concentrations it reviewed.

Where squalane comes from now

Historically, squalane was made from shark liver oil. Today, cosmetic squalane is commonly made from olives, sugarcane fermentation, or other plant sources. Two of my supplier documents show both routes:

• The TRI-K skin care brochure lists an olive-derived squalane with a natural origin index (NOI) of 1.00 under ISO 16128, meaning it counts as fully natural in origin, and a shark-derived squalane separately (supplier data).
• The Spec-Chem ingredient catalogue lists a fermentation-derived squalane with a recommended use level of 0.5% to 40% (supplier data).

Shark and plant squalane are the same molecule. If sourcing matters to you, ask the brand which source it uses, since the INCI name on the label is simply "Squalane" either way.

Why the full formula decides the result

A low-risk oil can still sit in a product that feels heavy. When I evaluate whether a formula will feel light on oily or easily congested skin, I look at four things:

1. Total oil load. A 5% oil phase in a gel cream feels completely different from a 40% oil phase in a balm, even if both use squalane.
2. Butters and waxes. Shea butter, cocoa butter and beeswax add occlusion and a richer film. They are not "bad," but they change the finish.
3. Unsaturated plant oils. Oils high in fragile fatty acids can oxidize over time. Squalane is often used partly because it does not.
4. Packaging and storage. Air, light and heat age any oil-containing product. An airless pump or a dark bottle stored away from a sunny window keeps the formula closer to fresh.

If you want to compare textures more broadly, my guide to oil-based vs water-based serums explains how each type feels and where it fits in a routine.

A squalane face oil I make at the bench

This is a light, fast-absorbing anhydrous (water-free) facial oil. Squalane is used at 40%, the highest rate in the Spec-Chem supplier range. Because there is no water, it does not need a broad-spectrum preservative, but keep water and wet fingers out of the bottle.

Method:

1. Sanitize a glass beaker, a stirring rod and a 1 oz dark glass dropper bottle with 70% isopropyl alcohol and let them air dry.
2. Weigh each oil on a scale that reads to 0.1 g. Weighing beats measuring by volume for oils because their densities differ.
3. Stir gently at room temperature. No heating is needed since all three are liquid.
4. Bottle, label with the date, and store away from light and heat.

How to use it: press 2 to 4 drops into slightly damp skin at night, or warm 1 to 2 drops between your palms and press over moisturizer. On oily skin, start with 1 to 2 drops every other night.

What to expect: the finish should feel soft rather than greasy within a few minutes. If your skin looks shiny an hour later, use fewer drops or apply it only to drier areas such as the cheeks.

Prefer a ready-made option? Our HydroGlow Anti-Aging Night Mask lists olive-derived squalane in its ingredient list, alongside glycerin, jojoba and a multi-peptide complex.

How to test any oil on your own skin

Ratings and studies tell you about risk across populations. Your skin is a sample of one. This is the method I recommend:

1. Patch test first. Apply a small amount to the inner arm for 24 hours if your skin is sensitive. If it looks fine, move on.
2. Test one small facial area. Choose a spot where you tend to see clogged-looking pores, such as along the jaw, and use the product there nightly for 2 to 4 weeks. Comedones take time to form, so a few days is not enough to judge.
3. Change one product at a time. If you add a new oil, a new cleanser and a new sunscreen in the same week, you will not know which one changed your skin.
4. Watch the whole routine. A heavy sunscreen or a rich makeup base can matter more than two drops of oil.

If ingredient lists still feel confusing, my walkthrough on how to read a skincare label (INCI) shows how to spot "squalane" versus "squalene" and where an ingredient sits by concentration.

Squalane compared with other popular face oils

For a closer look at one of those alternatives, see my jojoba oil guide.

Frequently asked questions

Is squalane good for oily skin?

Squalane is one of the lightest-feeling oils I work with, and it is stable, so many people with oily skin tolerate it well. Use 1 to 2 drops and judge the result over 2 to 4 weeks.

Is squalene the same as squalane?

No. Squalene is unsaturated and oxidizes in light and air. Squalane is the hydrogenated, saturated version. In rabbit-ear studies, oxidized squalene (squalene peroxides) was measured as highly comedogenic, which is why the distinction matters.

Is olive squalane better than sugarcane squalane?

Once purified, squalane is the same molecule regardless of the plant. Differences come from purity and processing, so buy from a supplier that provides a certificate of analysis.

Can I use squalane with retinol or peptides?

Yes. Squalane is inert and does not react with retinol or water-soluble amino acid sequences. Apply water-based serums first, then press squalane on top.

How long does squalane last once opened?

Because it is saturated, squalane resists rancidity much better than most plant oils. In a blend, the shelf life is limited by the least stable oil. Date your bottle and discard it if the smell changes.

Does a "non-comedogenic" label guarantee no clogged pores?

No. In the United States the term is not defined by a regulation, and testing methods vary by brand. The human data from Draelos and DiNardo show that the finished product, not one ingredient, determines the result.

Sources

1. Draelos ZD, DiNardo JC. A re-evaluation of the comedogenicity concept. Journal of the American Academy of Dermatology. 2006;54(3):507-512. doi:10.1016/j.jaad.2005.11.1058 (human patch study of finished products, 4 weeks)
2. Motoyoshi K. Enhanced comedo formation in rabbit ear skin by squalene and oleic acid peroxides. British Journal of Dermatology. 1983;109(2):191-198. doi:10.1111/j.1365-2133.1983.tb07080.x (animal model)
3. Chiba K, Yoshizawa K, Makino I, Kawakami K, Onoue M. Comedogenicity of squalene monohydroperoxide in the skin after topical application. Journal of Toxicological Sciences. 2000;25(2):77-83. doi:10.2131/jts.25.77 (animal model)
4. Picardo M, Ottaviani M, Camera E, Mastrofrancesco A. Sebaceous gland lipids. Dermato-Endocrinology. 2009;1(2):68-71. PMC2835893
5. Huang ZR, Lin YK, Fang JY. Biological and pharmacological activities of squalene and related compounds: potential uses in cosmetic dermatology. Molecules. 2009;14(1):540-554. doi:10.3390/molecules14010540 (review)
6. Cosmetic Ingredient Review Expert Panel. Final report on the safety assessment of squalane and squalene. Journal of the American College of Toxicology. 1982;1(2):37-56.
7. TRI-K Industries, Skin Care brochure (supplier data: olive squalane, natural origin index 1.00).
8. Spec-Chem Industry, Ingredients Catalogue 2026 V1 (supplier data: fermentation squalane, use level 0.5% to 40%).

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.

About the Author
Written by Kari Thomas, cosmetic formulator and founder of Skin Perfection.