Jen & Berries nail polishes are 12.5mL. Mini bottles will be out of stock until late this year/early next year. 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.