Linum Usitatissimum Seed Oil

This ingredient is also known as flaxseed oil or linseed oil. It is created by cold-pressing the seeds of the flax plant and is rich in fatty acids.

This oil is packed with omega-3 (ALA), omega-6, and omega-9 fatty acids that closely mimic the skin's own natural lipid barrier. The high omega-3 content gives it solid anti-inflammatory properties.

Clinical studies have found it can reduce water loss and improve smoothness/hydration, particularly in sensitive skin types. Studies also suggest it helps maintain the lipid layer that is compromised in atopic (eczema-prone) skin.

Wound healing studies showed that low-concentration linseed oil formulations (1-5%) produced significant barrier repair, but it should be noted that high concentrations showed diminishing returns.

Acne

This ingredient shows up on a lot of "pore-clogging" lists but there's no real evidence behind that. It doesn't even have a comedogenic rating from an actual study; the numbers you'll find online come from blogs citing other blogs.

Ratings for other ingredients mostly come from a 1980s rabbit ear test. This test doesn't translate well to human skin or to real products because the ingredient sits at a much lower percentage.

Some people still find it breaks them out. So if that's you, definitely trust your skin.

Fungal acne

The Malassezia yeast feeds on fatty acids in the C11-24 range, and this ingredient is basically all C16-18 fatty acids. Therefore, this ingredient may not be fungal acne safe.