Natural eye liner. Uoga Uoga has created a natural eye liners for you to enjoy and to bring joy to others with your expressive eyes. They can help you create either a light everyday or an impressive evening make-up! These eye liners are easy to apply with a brush: using brushes of different thickness you can create a define thin or a softer thicker line. The intense shades are made from pure natural minerals, not using any synthetic colouring. Rich composition, which includes luxurious oils, is here for your eyes to look perfect every day and night!