Yes, you must use all our products to create a long-lasting gel manicure. To ensure a successful application, it is essential you use Gelous Base Coat, Gelous Colour Coat, and Gelous Top Coat, whilst curing each coat with the Gelous UV/LED Gel Nail Lamp. If you skip the Base Coat or Top Coat, or try to dry your nails without the Gel Nail Lamp, your manicure or pedicure will not be effective and could even cause serious damage to your hands or nails. Gelous Gel Nail Polish and the Gelous UV/LED Gel Nail Lamp are designed to be totally compatible, with the UV LED Gel Nail Lamp operating at 365-405nm and the Gel Polish specially formulated to cure within this wavelength. Though we use a reasonably generic curing wavelength, we do advise against using different polishes with our lamps, different lamps with our polish, or different brands polishes with our polish, as they may not be compatible. Incompatibility could damage the polish or result in under-curing which can cause serious damage to your hands or nails.