Older collections may come in 14mL full-sized bottles. New collections come with 12.5mL full size and 9mL mini bottles. A good base and top coat is recommended to maintain the life of your manicure and to prevent staining from highly pigmented polishes. Since I hand make all polishes in small batches, there may be slight variations, though I follow my recipes closely to prevent this. Colors may also vary due to different screen displays and due to the different lighting and equipment that is used to photograph them. Ingredients are listed in my frequently asked questions.