Vitamin F

Linseed Acid is a mixture of fatty acids extracted from flaxseed (Linum usitatissimum), highly concentrated in linoleic acid, linolenic acid, and oleic acid. Commercially, it is also referred to as Vitamin F, a non-official term often used to indicate these essential fatty acids, which are vital for skin health.

It appears as a fluid, oily substance, light yellow in color, with a characteristic scent, and is liposoluble. It is a key ingredient in dermo-cosmetic formulations aimed at nourishing, repairing, and strengthening the skin barrier.

Functions and Cosmetic Activity

Linseed Acid works on multiple levels to benefit the skin:

• It is a deeply nourishing emollient, capable of replenishing epidermal lipids and strengthening the skin barrier function, preventing dryness and flaking.

• Its high content of alpha-linolenic acid (omega-3) and linoleic acid (omega-6) makes it a natural antioxidant with anti-inflammatory and soothing properties, particularly beneficial for sensitive, red, or reactive skin.

• It supports tissue regeneration, improving the appearance of stressed, mature, or lipid-depleted skin, and is helpful in cases of dermatitis.

• It may contribute to enhancing skin radiance, leaving the skin softer, firmer, and more even in tone.

Cosmetic Benefits

Regular use in formulations promotes skin that is more elastic, hydrated, and protected, thanks to the balanced supply of omega-3 and omega-6 fatty acids.

It is especially recommended in products for:

• Anti-aging, due to its regenerative and rebalancing effect

• Dry or atopic skin, where it helps restore the lipid barrier

• Soothing treatments, including post-sun and post-aggressive treatments (e.g., peeling, laser)

Thanks to its richness in unsaturated fatty acids, it provides a light yet nourishing touch, making it ideal even in light emulsions or balanced lipid phases.

Origin and Sustainability

Linseed Acid is obtained through cold pressing or oil extraction from flaxseeds. It can be used as-is or saponified and then acidified to isolate the pure acid fraction. It is considered a natural, biodegradable ingredient, compatible with green certifications and COSMOS standards.