It’s a common belief that applying oil makes the skin oily. This persistent myth still leads many people to avoid facial oils, fearing excess shine or breakouts.
In reality, the skin functions in a far more complex and intelligent way.
The natural role of sebum
Have you ever heard of the hydrolipidic film?
This invisible layer sits on the surface of the skin and acts as its first line of defence. It is composed of water (sweat) and lipids (sebum), naturally produced by the sweat and sebaceous glands.
This protective barrier shields the skin from external aggressors while preventing moisture loss.
Sebum plays a vital role: it nourishes the skin, maintains suppleness, and supports the integrity of the skin barrier.
In other words, oil is not the enemy : it is essential.
However, everything is a question of balance: in insufficient amounts, the skin becomes dry and fragile; in excess, it can clog pores and promote the appearance of blemishes. A “just right” production of sebum therefore helps keep the skin healthy, protected, and balanced.
Why does skin become oily?
The skin is alive. It adapts, reacts, compensates.
Excess sebum production can appear when this balance is disrupted:
- due to overly harsh or stripping skincare
- due to a lack of hydration
- due to hormonal changes
- or due to internal factors such as stress or genetics
When it feels weakened, the skin activates its defense mechanisms.
It then produces more sebum to protect itself.
What we perceive as “oily skin” is often, in reality, a skin in search of balance.
Oils: a support, not an enemy
When applied appropriately, an oil can become a real ally.
Some plant oils, rich in essential fatty acids and antioxidants, provide the skin with lipids similar to those it naturally contains.
They therefore help to:
- strengthen the skin barrier
- preserve hydration
- soothe overcompensation mechanisms
Rather than “making the skin oily,” they support it toward a more stable and calmer functioning.
Even if it may seem counterintuitive, applying an oil suited to your skin type can help regulate sebum production. When the skin no longer feels attacked, it stops overproducing sebum.
Not all oils are equal
This is where everything matters.
It is important to choose “living” oils, rich in vitamins and high-quality fatty acids, which help support the proper functioning of the skin.
✅ Virgin plant oils, ideally cold-pressed, retain the full richness of their natural active compounds. They are alive, sensory, and truly beneficial for the skin.
❌ Mineral oils, derived from petrochemicals, are inert. They form a protective film on the surface but provide no nutrients to the skin.
🟠 Refined or heated oils lose a large part of their active compounds during processing. More neutral and more stable, they are often used for ease of formulation, but their skin benefits remain limited.
Choosing an oil is therefore primarily about choosing its quality and its intention.
So, myth or reality?
Saying that oil makes the skin oily is a myth, provided it is of good quality.
When properly chosen, an oil can on the contrary help the skin regain its balance, refine its appearance, and reveal a more harmonious complexion.
The key is not to eliminate oil, but to restore its proper place.
Learning to listen to your skin, understand its needs, and provide it with consistent care: that is where everything begins.