Introducing the Essentials Kit from The Whitening Co! The Essentials Kit guarantees instant teeth whitening results. Their Dental Grade and FDA approved whitening formula holds an impressive 20 uses per kit. - Includes 2 White Pens & The Black Light. This light uses state of the art wireless technology and is rechargeable with a built in timer for ease of use. - Smaller box for the most compact, but effective kit. Perfect for travel. - Added mirror on the inside of the box (#selfie) - Designed to be kept and topped up. Purchase top up pens when you run out - reducing waste and saving you money.