What it does
- Supports the barrier as an essential fatty acid.
- Softens and conditions; useful for dry and blemish-prone skin.
- Helps balance the lipid profile of oily skin.
How it works
Linoleic acid is an essential fatty acid the skin cannot make. It is widely documented as a key barrier lipid; sebum in blemish-prone skin is often relatively low in linoleic acid, which is why linoleic-rich oils are popular for such skin. It is prone to oxidation.
Use level
- Typical use level
- typically 0.1–2% (higher via carrier oils)
Used at low levels directly (0.1–2%) or delivered through linoleic-rich carrier oils (such as grapeseed or safflower).
Formulation considerations
- Oil-soluble; part of the oil phase.
- Oxidation-prone; use antioxidants and protect from heat/light.
- Often delivered via linoleic-rich plant oils.
What it pairs with & what to avoid
Pairs well with
- Vitamin E (to protect)
- Ceramides and barrier lipids
Use with care / avoid
- Oxidation without antioxidant protection
Regulatory status
Linoleic acid is listed in the EU CosIng database and is a well-established skin-conditioning ingredient.
Common questions
What is vitamin F in skincare?
'Vitamin F' refers to essential fatty acids, mainly linoleic acid, which support the skin barrier.
Is linoleic acid good for acne-prone skin?
Blemish-prone sebum is often low in linoleic acid, so linoleic-rich oils are popular for such skin.
What percentage of linoleic acid is used?
Around 0.1–2% directly, or higher via linoleic-rich carrier oils.