Seabuckthorn oil is a carrier oil extracted from the seeds and fruit of the seabuckthorn plant. It is high in vitamins A, C, and E, as well as essential fatty acids, antioxidants, and carotenoids. It is known for its nourishing and regenerating properties, and is often used in skincare products to help with skin conditions such as eczema, rosacea, and sunburns. It is also believed to have anti-inflammatory properties, which may make it useful for treating certain skin conditions. It is also used to improve skin elasticity, hydration, and overall skin health. Seabuckthorn oil is typically used in skincare products and can be added to other carrier oils to make a blend. It is considered safe for most people when used topically, but it's always best to do a patch test before using it and to consult with a healthcare professional before using it internally.