Known as Canola Oil, this is a light, non‑fragrant oil pressed from the seeds of the rapeseed plant. Modern canola oil is bred to contain < 2 % erucic acid, making it safe for topical and dietary use. The oil consists mainly of unsaturated fatty acids; oleic acid accounts for roughly 46 – 66 % while linoleic and α‑linolenic acids contribute 13 – 41 % and 7.9 – 14.8 %, respectively. These polyunsaturated lipids help mimic the natural lipid balance in skin and scalp, improving barrier function and moisture retention. Linoleic acid, an essential omega‑6 fatty acid, is particularly beneficial for skin integrity and cell membranes. The unsaponifiable fraction contains vitamin E (γ‑ and α‑tocopherol), flavonoids, carotenoids, ferulic acid, squalene and phytosterols; these compounds have potent antioxidant and anti‑inflammatory activity. Tocopherols can reach 73 mg per 100 g in unroasted oil and provide strong free‑radical scavenging and anti‑aging effects. Phytosterols such as β‑sitosterol, campesterol and brassicasterol exhibit anti‑inflammatory and antimicrobial actions and support skin barrier function.

These biochemical attributes translate into numerous cosmetic benefits. The oil acts as a gentle emollient and moisturizer: its high oleic content provides a soft, lubricating feel and its light texture allows rapid absorption without greasiness. Cosmetic ingredient databases describe rapeseed oil as a non‑fragrant plant oil used both as an emollient and anti‑aging ingredient; it is rich in omega‑3 and omega‑6 fatty acids and antioxidants and is ruled safe in cosmetics up to 5 %. In skin care, the oil soothes dry or irritated skin, locks in hydration and enhances the skin’s natural barrier. Vitamin E, carotenoids and ferulic acid neutralize free radicals and help protect against environmental stressors that contribute to premature aging. The oil’s phytosterols and squalene calm inflammation and may modulate sebum production, making it suitable for sensitive or acne‑prone skin. Due to its film‑forming properties and neutral odor, canola oil also improves texture and viscosity in creams, balms and lip products.

For hair care, rapeseed oil serves as a conditioning and anti‑frizz agent. It contains unsaturated fatty acids that coat the hair shaft, seal moisture and penetrate the scalp. Hair‑care specialists note that its plant sterols soften split ends and form a protective coating over strands to prevent breakage. Because the oil is lightweight, it tames frizz and restores shine without leaving an oily residue. Formulators incorporate canola oil into shampoos, conditioners, masks and leave‑in treatments to nourish the scalp, soothe irritation and support a healthy environment for hair growth. Its balanced fatty‑acid profile and mild antioxidant content also help stabilize formulations and prolong shelf life.