Seabuck Thorn Oil is made by cold pressing the seeds of the Seabuck Thorn berries and seeds. Sea buckthorn oil is a popular alternative remedy for a variety of ailments. It is rich in many nutrients and may improve the health of your?skin liver?and heart. It may also help protect against diabetes and aid your?immune system Very few side effects from sea buckthorn have been reported. In some people who had? high blood pressure<, swelling,?headache,?dizziness?and?palpitations?were noted. When used on the skin to treat burns, it sometimes caused a?rash.