How to Choose the Right Face Oil
A Science-Based Guide to Squalane, Jojoba, Argan, Rosehip & Castor
Face oils are often marketed as interchangeable.
They are not.
Each oil has a different molecular structure, a different origin, and a different role on the skin.
At Clean Label Studio™, we work exclusively with single-ingredient oils so you can understand not only what you’re using — but why it works, when it makes sense, and how to combine it intelligently.
This guide explains the real function of squalane, jojoba, argan, rosehip, and castor oil — based on chemistry, skin biology, and use-case logic.
First: what oils actually do (and don’t do)
Oils do not hydrate the skin.
They contain no water.
What oils do is:
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interact with the lipid barrier
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soften and condition the stratum corneum
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reduce transepidermal water loss (TEWL)
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improve comfort, flexibility, and resilience
The difference between oils lies in:
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molecular structure
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weight and spreadability
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film-forming vs penetrating behavior
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biological compatibility
JUST SQUALANE™
When skin needs lipid compatibility and stability
Origin: Sugarcane-derived
What it is: A stabilized form of squalene
Squalene is a natural component of human sebum.
Squalane is the hydrogenated, stable version of that same molecule.
By saturating the structure:
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oxidation is prevented
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irritation risk is reduced
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shelf stability improves
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skin tolerance increases
How it behaves
Ultra-light, fast-absorbing, non-occlusive.
Best used when
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skin is sensitive, reactive, or acne-prone
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you want softness without residue
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oils usually feel “too much”
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used daily, alone or layered
Role in a system
→ Base oil for comfort and compatibility
→ Can be layered under richer oils
JUST JOJOBA™
When skin needs regulation, not extremes
Origin: Jojoba seed
What it is: A liquid wax ester (not a triglyceride oil)
Jojoba is structurally similar to human sebum — not because it mimics it, but because it is also a wax ester, like the lipids produced by sebaceous glands.
How it behaves
Balanced, conditioning, adaptive.
Best used when
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skin fluctuates between oily and dry
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barrier feels unstable
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acne-prone skin still needs lipids
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scalp or hair needs balance
Role in a system
→ Regulating oil
→ Can be used alone or blended with squalane or rosehip
JUST ARGAN™
When skin needs nourishment and reinforcement
Origin: Argan kernel (Morocco)
What it is: A triglyceride oil rich in fatty acids and antioxidants
Argan oil contains a meaningful mix of:
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oleic acid (emollience)
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linoleic acid (barrier support)
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tocopherols and sterols (antioxidant protection)
How it behaves
Cushioning, nourishing, protective.
Best used when
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skin feels dry or lipid-deficient
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barrier is compromised
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exposed to sun, wind, or cold
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hair is dry or damaged
Role in a system
→ Nourishing oil
→ Often layered over squalane or jojoba
JUST ROSEHIP™
When skin needs light restoration and balance
Origin: Rosehip seed
What it is: A lightweight triglyceride oil high in essential fatty acids
Rosehip oil is naturally rich in:
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linoleic acid (omega-6)
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alpha-linolenic acid (omega-3)
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carotenoids and tocopherols
How it behaves
Light, fast-absorbing, refining.
Best used when
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skin looks dull or uneven
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texture feels off
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heavier oils feel too much
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fine hair or dry ends need softness
Role in a system
→ Balancing / refining oil
→ Can be used alone or blended with squalane
JUST CASTOR™
When skin or hair needs sealing and protection
Origin: Castor seed
What it is: A triglyceride oil dominated by ricinoleic acid
Ricinoleic acid gives castor oil:
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high viscosity
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strong film-forming ability
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occlusive, sealing behavior
How it behaves
Dense, coating, protective.
Best used when
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sealing moisture is the goal
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skin is very rough or exposed
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brows, lashes, cuticles, edges
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thick, curly, or textured hair
Role in a system
→ Final sealing oil
→ Used sparingly or mixed with lighter oils
You don’t have to choose just one
Skin is not static.
Neither is climate, hormones, or barrier health.
You can:
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use one oil as your core
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layer oils (light → rich)
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blend oils in your palm
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change oils seasonally or by zone
This is not about owning more.
It’s about using oils with intention.
Why Clean Label Studio™ is different
We don’t sell “all-in-one miracle oils”.
We offer:
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single-ingredient clarity
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biological logic
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modular routines
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no fragrance
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no fillers
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no confusion
You build what your skin actually needs.
Final thought
The right oil isn’t universal.
It’s contextual.
Understand the role — then choose the tool.
Explore the JUST™ Oil System
One oil, or a system — built for real skin biology.