Antioxidants found in grapeseed extract, help in preventing cancer. Grape seed oil can also prove beneficial in conditions like, asthma, allergies, acne and dermatitis. The oil from grapeseed reduces LDL (bad Cholesterol) and increases HDL (good cholesterol), which in turn helps in keeping your arteries clear. Omega-3, Omega-6, and Omega-9 are the fatty acids found in this oil.