BlackBox Cosmetics Ageless Retinol Capsules are an inexpensive, quick and easy way to get fresh, high-potency retinol right on your skin. Each capsule is good for one application or more. It goes on smooth and non-greasy. They can be used alone or added to boost any ongoing anti-aging serum or lotion routine. Many dermatologists agree that Retinol should be a part of any age-defying skin program.