Cold-pressed vs. refined: what heat does to an oil

Glass bottle of golden cold-pressed oil with a cork stopper and a small dish of oil beside it

Short answer: Cold-pressed oil is pressed mechanically with no applied heat, so it keeps its colour, smell and minor compounds such as vitamin E and phytosterols. Refined oil is heated, often solvent-extracted, bleached and deodorised for higher yield and longer shelf life. On a label, an oil with no smell and no “cold-pressed” wording is usually refined.

Key takeaways

  • Cold-pressed oil is pressed without applied heat and keeps its colour, smell and minor compounds.
  • Refined oil is heated, often solvent-extracted, bleached and deodorised, which raises yield and shelf life.
  • A carrier oil with no smell and no “cold-pressed” on the label is usually refined.
  • Caution: cold-pressed oils go rancid sooner, and nut oils are not for people with nut allergies without a doctor’s advice.

Two bottles of almond oil can sit side by side on a shelf, look identical, and have almost nothing in common. The difference is what happened in the hour after the nut was crushed.

What does cold-pressed oil mean?

It means the seed or nut is pressed mechanically, slowly, without added heat. The press does warm slightly from friction — “cold” means no heat is applied, not that the process is refrigerated. What comes out is cloudy, smells like the thing it came from, and carries the vitamin E, phytosterols and polyphenols that lived in the seed.

It yields less oil. That is the entire reason the other method exists.

What does refining do to an oil?

Refining runs the crop through high heat and often a solvent, then bleaches and deodorises what is left. Yield goes up dramatically. Shelf life goes up. Colour and smell disappear — which is convenient if you are blending it into something that should smell of nothing.

What also disappears is most of the minor compounds that made the oil worth putting on skin. You are left with the fat and very little else.

Cold-pressed vs refined: what is the difference?

Cold-pressed Refined
Process Pressed mechanically, no applied heat High heat, often a solvent, then bleached and deodorised
Colour and smell Has colour and smells of the source Pale and almost odourless
Minor compounds Keeps vitamin E, phytosterols, polyphenols Most are lost
Yield and cost Less oil per harvest, higher cost High yield, lower cost
Shelf life Shorter Longer

How can you tell cold-pressed oil from refined oil?

Cold-pressed oil has colour and it has a smell. Sweet almond oil should smell faintly of almond; sesame should smell of sesame. A carrier oil that smells of nothing has usually been through a lot to get that way.

Watch the label for “refined”, “RBD” (refined, bleached, deodorised), or simply nothing at all — the absence of “cold-pressed” is itself information. Read the rest of the label too, as one phrase alone does not guarantee quality.

GraceYes Sweet Almond Oil, 50 ml

Sweet Almond Oil

50 ml · ₹460

A cold-pressed carrier oil that should smell faintly of almond.

Not for you if you have a tree-nut allergy. Choose coconut oil instead.

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Honest note: if you have a nut allergy, check with your doctor before using any nut oil on your skin, and patch test first.

Why do we press cold and accept the lower yield?

We would rather sell less oil from the same harvest than sell more of something the harvest no longer resembles. It is the more expensive choice on every line of the spreadsheet, and it is the only one consistent with putting the ingredient’s name on the front of the bottle.

Shop cold-pressed basics

Add only the steps you need. Each button adds one item to your bag.

GraceYes Coconut Oil

Hair and body

Coconut Oil · 100 ml · ₹400

One ingredient, cold pressed; widely used before washing

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GraceYes Sweet Almond Oil

Face and body

Sweet Almond Oil · 50 ml · ₹460

A classic light emollient; skip it with a tree-nut allergy

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GraceYes Kalonji Oil

Scalp

Kalonji Oil · 30 ml · ₹390

Cold pressed, with the sharp, peppery smell real kalonji should have

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Frequently asked questions

Is cold-pressed oil better for skin?

It keeps more of the plant’s minor compounds, which is why we choose it. That is a statement about what is in the bottle, not a promise of a particular skin result.

Does cold-pressed mean no heat at all?

No. Friction in the press warms the oil slightly. It means no heat is applied to the seed or the oil during extraction.

Is refined oil unsafe?

Not by default. Refined oil has a longer shelf life and a neutral smell, which suits some uses. It simply keeps less of what the original seed carried.

Can cold-pressed oil go rancid?

Yes, and sooner than refined oil. Store it cool, dark and tightly closed, and stop using it if the smell turns sharp or stale.

Why is cold-pressed oil more expensive?

The slow press extracts less oil from the same amount of seed, so each bottle costs more raw material.

Which oil is a simple one to start with?

A light oil such as sweet almond is a common starting point. Patch test first, and ask your doctor if you have a nut allergy or a skin condition.

In short: cold-pressed keeps the character of the seed; refined trades it for yield and shelf life.

Our motto: to make the cleanest beauty products

If you'd like to try a cold-pressed oil, our carrier oils are single-ingredient, with nothing added.

Browse our carrier oils →

Related reading: why most of our formulas need no preservative and how to read an ingredient label.

More from the Journal: Body oil for dry skin after a shower: how to use it, and how much and Gotu kola oil for face: benefits and how to use it.

About the author: Bhavya Ankita is the founder of GraceYes Organics, a plant-based personal care brand. About GraceYes

This article is for general information and cosmetic use only. It is not medical advice. Patch test before use. If you have a skin or scalp condition, are pregnant, or are using this on a child, check with your doctor.