Compare · Ingredients

Petrolatum vs Squalane

Petrolatum: Reduces water loss and protects dry or chapped skin. Squalane: Softens dry skin and adds slip to moisturizers or facial oils.

Research updated 2026-10-25
Four ointments on white: CeraVe Healing Ointment, a Vaseline jar, a petroleum jelly tube and AquaphorFive squalane oils with two boxes on white, from Timeless, Good Molecules, Natural Outcome, Pure'am and The Ordinary
Which one?At a glanceWhat it helpsDiagramsUsing bothStrengthsResultsSafetyHow it worksProductsQuestions

Which one is right for you?

Choose Petrolatum if…

Choose for sealing in moisture on dry areas when a greasy texture is acceptable.

  • Very dry, cracked or chapped skin
  • Healing minor wounds
  • A greasy feel is acceptable

Choose Squalane if…

Choose for lightweight-feeling emollience if it suits your skin.

  • Dry skin wanting a light oil
  • Sensitive skin
  • Layering over serums
Fine together

Can you use both?

Squalane softens; petrolatum seals on top for very dry skin.

At a glance

● Petrolatum
● Squalane
Type
Occlusive skin protectant mixture
Emollient hydrocarbon
What it does
Reduces water loss and protects dry or chapped skin.
Softens dry skin and adds slip to moisturizers or facial oils.
Best for
Dry Skin; Chapped Lips; Eczema; Minor Wounds
Dry Skin; Sensitive Skin
Studied concentrations
30–100% in labelled US skin protectants; plain petrolatum is widely used.
Used alone or in creams; no established best percentage.
When to use
Morning or night, as directed by the finished product.
Morning or night, as directed by the finished product.
Time to results
Comfort may improve quickly; reassess persistent dryness
Comfort may improve quickly; reassess persistent dryness
Irritation
May feel greasy or cause follicular bumps in some areas; avoid using as a substitute for infection treatment.
May feel oily or cause bumps in some formulas; stop for a rash.
Sensitive skin
Choose a simple formula and test a small area first. Individual tolerance matters more than an ingredient’s reputation for being gentle.
Choose a simple formula and test a small area first. Individual tolerance matters more than an ingredient’s reputation for being gentle.
Available
Cosmetic or OTC products; some high-strength procedures are separate treatments.
Cosmetic or OTC products; some high-strength procedures are separate treatments.

What it helps

Compare uses by strength of evidence. Evidence level describes confidence in a benefit, not its size.

Evidence level
Petrolatum
Squalane
Moderate evidenceSome supportive research
The front of one shin on pale skin. The surface is pink with fine white flaking and a few shallow cracks, and the skin around it is even in tone.

Dry Skin

Controlled testing supports reduced moisture loss.
Educational illustration of dry flaking lips with shallow surface creases, with the lower face turned to the person’s right on light skin.

Chapped Lips

Labelled products protect chapped skin and help retain moisture.
Extreme close-up of light skin in an active eczema flare, too close to tell which part of the body it is. Blotchy pink-red inflammation covers the whole frame with no clear edge, with small raised bumps, fine dry scale and a few fresh scratch marks.

Eczema

Useful moisturizing support alongside an appropriate flare plan.
—
Limited evidenceEarly or small studies
Minor Wounds.

Minor Wounds

Helps keep clean minor wounds moist; infected, deep or persistent wounds need care.
The front of one shin on pale skin. The surface is pink with fine white flaking and a few shallow cracks, and the skin around it is even in tone.

Dry Skin

An emollient role is plausible, but standalone clinical studies are limited.
Sensitive Skin on light skin.

Sensitive Skin

Simple formulas may be comfortable; individual tolerance varies.
Insufficient evidence
Inflamed acne on light skin. The spots sit in a patch of pink, and the ring of redness around each one is easy to see. A few have a yellow-white head, and the skin between them is dry and flaking.

Acne

The reviewed sources do not establish this ingredient as a treatment for this concern.
Sunburn: 1. Sunburn Header — Light Skin; Lighter skin.

Sunburn

The reviewed sources do not establish this ingredient as a treatment for this concern.
Inflamed acne on light skin. The spots sit in a patch of pink, and the ring of redness around each one is easy to see. A few have a yellow-white head, and the skin between them is dry and flaking.

Acne

The reviewed sources do not establish this ingredient as a treatment for this concern.
A relaxed forehead with faint shallow horizontal fine lines.

Wrinkles and Fine Lines

The cited fullerene study does not establish squalane as an anti-wrinkle active.
How it works

Petrolatum

Petrolatum mechanism diagram. Forms a surface barrier: Petrolatum creates an occlusive film. Helps hold moisture in: Less water evaporates from the outer skin.
Open full-size diagram
Diagram explanation and sources

Forms a surface barrier: Petrolatum creates an occlusive film. Helps hold moisture in: Less water evaporates from the outer skin.

Schematic illustration; not a measurement of skin penetration. Effects vary with ingredient identity and formulation.

Source 1 · Source 2 · Source 3

Squalane

Squalane mechanism diagram. Spreads over the surface: Squalane helps smooth and soften dry skin. Works in a moisturizer: The full formula determines moisture retention.
Open full-size diagram
Diagram explanation and sources

Spreads over the surface: Squalane helps smooth and soften dry skin. Works in a moisturizer: The full formula determines moisture retention.

Schematic illustration; not a measurement of skin penetration. Effects vary with ingredient identity and formulation.

Source 1

Using both in one routine

Built from where each one usually sits in a routine. Introduce one at a time.

Morning
Step 1
Cleanser
Step 2
SqualaneMorning or night
Step 3
Sunscreen
Night
Step 1
Cleanser
Step 2
PetrolatumNight
Step 3
SqualaneMorning or night

Strengths and forms

Concentrations

U.S. skin-protectant products use 30–100% petrolatum. Plain petrolatum is an occlusive barrier; a blended cream may offer a different balance of hydration, protection and feel.

30–100%

U.S. skin-protectant range

Includes petrolatum-based protective ointments. The upper end describes a plain ingredient, not a stronger treatment for every condition.

Choosing a strength: Choose plain petrolatum when a simple protective ointment suits the job, or a cream when you also want water-binding ingredients and easier spreading.

Higher strengths: More petrolatum usually changes richness and occlusion rather than creating a new medicinal dose.

Formula matters: Ointments, creams and lip products have different textures and intended uses. A product with other ingredients is not identical to plain petrolatum.

Squalane is an emollient used in oils and creams; there is no established best percentage for skin repair or wrinkles. It should not be confused with squalene.

Choosing a strength: Choose the texture and complete formula for your skin. A squalane-containing cream and a plain oil offer different combinations of ingredients.

Higher strengths: A more concentrated oil is not established as a more effective anti-aging treatment.

Formula matters: Results from a combination containing squalane cannot be attributed to squalane alone. The other active ingredients and moisturizer base matter.

Forms
Jelly · Ointment · Lip balm
Pure oil · Moisturizer

When you’ll see results

Approximate windows, not promises.

● Petrolatum
● Squalane
First few weeks

First few weeksSkin may feel softer soon after use; relief depends on the formula.

First few weeksSkin may feel softer soon after use; relief depends on the formula.

4–8 weeks

4–8 weeksJudge hydration, comfort and whether dryness is recurring.

4–8 weeksJudge hydration, comfort and whether dryness is recurring.

8–12 weeks

8–12 weeksPersistent cracking, itch or a rash needs reassessment.

8–12 weeksPersistent cracking, itch or a rash needs reassessment.

3–6 months

3–6 monthsContinue if comfortable; hydration usually requires ongoing use.

3–6 monthsContinue if comfortable; hydration usually requires ongoing use.

6–12 months

6–12 monthsMoisturizing does not establish reversal of structural ageing or scars.

6–12 monthsMoisturizing does not establish reversal of structural ageing or scars.

Safety and sensitive skin

Common reactions

May feel greasy or cause follicular bumps in some areas; avoid using as a substitute for infection treatment.

May feel oily or cause bumps in some formulas; stop for a rash.

When to stop

Stop for persistent burning, swelling, blistering or a new rash. Seek urgent care for breathing difficulty or a severe allergic reaction.

Stop for persistent burning, swelling, blistering or a new rash. Seek urgent care for breathing difficulty or a severe allergic reaction.

Sensitive or inflamed skin

Choose a simple formula and test a small area first. Individual tolerance matters more than an ingredient’s reputation for being gentle.

Choose a simple formula and test a small area first. Individual tolerance matters more than an ingredient’s reputation for being gentle.

Important limits

Do not use a cosmetic product as a substitute for diagnosis of an unexplained, changing or persistent skin problem.

Do not use a cosmetic product as a substitute for diagnosis of an unexplained, changing or persistent skin problem.

Pregnancy

It stays on the surface and is not absorbed in any meaningful amount. Even so, check your routine with the doctor managing your pregnancy.

Squalane is generally considered acceptable in pregnancy.

How it works

In the skin

On the skin. The finished product delivers petrolatum in a particular vehicle.

Entering skin. No single molecular mass. The 500 Da guideline cannot be applied to this whole ingredient family or mixture.

Conversion. No activation step is established as necessary for its intended topical role.

Skin response. Forms a surface layer that limits water evaporation; deep penetration is unnecessary for this job.

Additional effects. Proposed pathways do not establish a measured depth of delivery or clinical benefit beyond the studies cited.

On the skin. The finished product delivers squalane in a particular vehicle.

Entering skin. Below 500 Da in this molecular form. Its useful surface action does not require deep delivery; the formula and skin condition matter.

Conversion. No activation step is established as necessary for its intended topical role.

Skin response. Spreads over the outer skin as an emollient; softening does not require reaching deep tissue.

Additional effects. Proposed pathways do not establish a measured depth of delivery or clinical benefit beyond the studies cited.

Getting in
No single molecular mass. The 500 Da guideline cannot be applied to this whole ingredient family or mixture.
Below 500 Da in this molecular form. Its useful surface action does not require deep delivery; the formula and skin condition matter.

Product examples

Petrolatum
  • Jack Black Intense Therapy Lip Balm SPF 25 — Avobenzone paired with octinoxate, which destroys it. Real UVA protection is likely well below the label.
Squalane
  • First Aid Beauty Retinol Eye Cream With Squalane + Ceramides
  • First Aid Beauty Hydrating Toner With Squalane + Oats

Common questions

Petrolatum:What should I choose petrolatum for?

Choose for sealing in moisture on dry areas when a greasy texture is acceptable.

Petrolatum:How strong is the evidence?

Controlled testing supports reduced water loss. A small eczema trial compared complete products and did not establish universal superiority or treatment of infection.

Squalane:What should I choose squalane for?

Choose for lightweight-feeling emollience if it suits your skin.

Squalane:How strong is the evidence?

A reviewed wrinkle study used squalane as the vehicle for fullerene. It cannot be cited as proof that squalane itself reverses wrinkles; standalone controlled evidence is limited.

Sources

Sources and further reading

  1. Combined effects of glycerol and petrolatum in an emollient cream: A randomized, double-blind, crossover study in healthy volunteers with dry skin. (2020)
  2. An over-the-counter moisturizer is as clinically effective as, and more cost-effective than, prescription barrier creams in the treatment of children with mild-to-moderate atopic dermatitis: a randomized, controlled trial. (2011)
  3. FDA skin-protectant monograph
  4. Clinical evaluation of fullerene-C60 dissolved in squalane for anti-wrinkle cosmetics. (2010)
  5. Clinical study of a mixed moisturizer containing squalane
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