Linoleic acid is an essential fatty acid that your skin needs to maintain its barrier and stay healthy. When applied topically, it may help repair damaged skin, reduce inflammation, support wound healing, and even stimulate hair growth—though most of this evidence comes from lab and animal studies, not yet from large human trials. People with acne, eczema, and psoriasis often have disrupted linoleic acid metabolism, suggesting it plays a real role in these conditions.

This was a review study, meaning researchers analyzed existing published research on linoleic acid rather than conducting new experiments. The findings are based on a mix of animal studies, skin cell models, and some human research.

Funding not disclosed in abstract